EM46R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 2 × 2 × 1.9 cm = 0.79” × 0.79” × 0.75”

Main crystal size: 1.7 × 1.5 cm = 0.67” × 0.59”

XM70ED: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite.
We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa

Specimen size: 3.3 × 3.1 × 1.7 cm = 1.30” × 1.22” × 0.67”

Main crystal size: 1.4 × 1.1 cm = 0.55” × 0.43”

EC63R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 3.4 × 2.7 × 2.9 cm = 1.34” × 1.06” × 1.14”

Main crystal size: 0.7 × 0.7 cm = 0.28” × 0.28”

EV13R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 3.5 × 3.3 × 2 cm = 1.38” × 1.30” × 0.79”

Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”

EZ63R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
This specimen has been photographed and published as a reference for the Bultfonteinite species in the magazine ‘Lapis‘ number 02/2021, page 9
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 3.6 × 3.1 × 2.8 cm = 1.42” × 1.22” × 1.10”

Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”

EW26R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Rivista Mineralogica Italiana’ on page 51 in number 2011/1
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.1 × 2.6 × 2.5 cm = 1.61” × 1.02” × 0.98”

Main crystal size: 1 × 1 cm = 0.39” × 0.39”

EV12R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.2 × 2.6 × 3 cm = 1.65” × 1.02” × 1.18”

Main crystal size: 0.8 × 0.6 cm = 0.31” × 0.24”

ET64R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.2 × 3.7 × 2.1 cm = 1.65” × 1.46” × 0.83”

Main crystal size: 0.9 × 0.9 cm = 0.35” × 0.35”

ER14R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.4 × 3.4 × 3.7 cm = 1.73” × 1.34” × 1.46”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

EL13R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.4 × 3.8 × 1.8 cm = 1.73” × 1.50” × 0.71”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”

EH16R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.7 × 2.7 × 2.3 cm = 1.85” × 1.06” × 0.91”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

EK26R1: Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2006)

Specimen size: 4.7 × 3.4 × 2.7 cm = 1.85” × 1.34” × 1.06”

Main crystal size: 1.4 × 1.4 cm = 0.55” × 0.55”

AX49AD6: Doubly terminated crystal on matrix. It is very individualized, translucent, bright and with a good color, with fine polycrystalline growths on the surface of its faces.
The sample is from the Sylvane collection, which label we’ll send to the buyer.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 2.3 × 2.2 × 2.2 cm = 0.91” × 0.87” × 0.87”

Main crystal size: 2 × 1.5 cm = 0.79” × 0.59”

EQ99: Excellent color, perfection, and esthetic: the form is really nice, it looks like a snowman. A exclusive and funny thing.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 2.5 × 1.7 × 1.7 cm = 0.98” × 0.67” × 0.67”

Main crystal size: 2.4 × 1.9 cm = 0.94” × 0.75”

EG6K9: Excellent miniature. The prismatic crystals are similar to a wheatsheaf with good brilliance and color. On rocky matrix.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 2.5 × 2 × 1.4 cm = 0.98” × 0.79” × 0.55”

Main crystal size: 1.2 × 0.8 cm = 0.47” × 0.31”

TLF86AN9: Sheaf-like growth of Olmiite crystals with well defined faces and edges, with good luster and a pale brown color, on matrix.
We will ship the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa

Specimen size: 2.7 × 2 × 2.1 cm = 1.06” × 0.79” × 0.83”

MG96AL5: Group of extraordinarily defined rhombic habit crystals, of a good size for the species, translucent and shiny and with an excellent reddish color, much more intense than usual in this type of specimen. With small Calcite crystals and globular white Oyelite aggregates.
N'Chwaning II Mine, level 45 south, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (13-15/08/2009)

Specimen size: 2.9 × 1.6 × 2.1 cm = 1.14” × 0.63” × 0.83”

Main crystal size: 1.8 × 1.5 cm = 0.71” × 0.59”

EC97AK3: Group of crystals of short prismatic habit, well developed, of good size for the species, translucent and lustrous, color between pink and reddish, as was typical of the first finds of this species.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 3.2 × 2.8 × 2.1 cm = 1.26” × 1.10” × 0.83”

Main crystal size: 0.5 × 0.5 cm = 0.20” × 0.20”

TM96N2: A novelty of Tucson 2009. Unusual groups of crystals of irregular contour, more or less oval-shaped. They are pink, and more intense on the terminations. They are on very acute scalenohedrons of Calcite and on matrix. They have come from a single geode. At first we believed they could be Poldervaartite due to the presence of the accompanying Calcite and the pinkish color of the crystals, but the analysis confirms that they are Olmiite (the manganoan end of the series) and not Poldervaartite (the calcian end). We’ll send a copy of the analysis to the buyer of the sample.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 29 in number 2009/2.
N'Chwaning II Mine, upper levels, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (12/2008)

Specimen size: 3.4 × 2.3 × 3.8 cm = 1.34” × 0.91” × 1.50”

MA27AH0: Complex and very aerial Olmiite crystal with parallel and polycrystalline growths, with very well defined faces and edges, translucent with a pink color changing to reddish in incandescent light. It is on matrix, with white Calcite crystals.
The sample, a South African classic, is from the Desmond Sacco collection, whose label we’ll send to the buyer.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)

Specimen size: 3.5 × 3.4 × 3.2 cm = 1.38” × 1.34” × 1.26”

Main crystal size: 2.4 × 1.8 cm = 0.94” × 0.71”

EB54E8: This one stands out for the crystalline terminations, pyramidal and in complex groups that give it a spherical look, and the sharpness of the forms of the prismatic faces. Both the color and brilliance are magnificent. The position of the group on the matrix makes it very esthetic and adds the definitive touch.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 4.8 × 2 × 3.4 cm = 1.89” × 0.79” × 1.34”

MB27AH0: A very aerial Olmiite crystal with polycrystalline growths, with very well defined faces and edges, translucent with a pink color that changes to reddish under an incandescent light. It is on matrix, with white Calcite crystals.
The sample, a South African classic, is from the Desmond Sacco collection, whose label we’ll send to the buyer.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)

Specimen size: 4.9 × 3.4 × 2.7 cm = 1.93” × 1.34” × 1.06”

Main crystal size: 1.4 × 1.4 cm = 0.55” × 0.55”

EB2B9: Two photos showing its spectacular color change. Just minor matrix on its rear, almost a floater specimen complete in all sides with perfect form and excellent luster-color perfection. The crystals have a spherical form, they are gemmy and are formed by hundreds of small parallel grow crystals. A beauty!.
This specimen was photographed for the magazine ‘Mineralien Welt’ and appears on page 18 of number 1/2009.
N'Chwaning II Mine, section 5 south, stope 46-47 roof, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (01/2002)

Specimen size: 5.5 × 3.7 × 3.2 cm = 2.17” × 1.46” × 1.26”

TM98D8: Recently new Olmiites were found in N'chwaning. The color is a little more orange than the first ones, and the crystals are a little bit smaller. But these ones are on a matrix of small crystals of gemmy Calcite, making the whole specimen esthetically pleasing. The prices are also lower than they were for the first ones, so we think they are a good deal. In this case the crystals of Poldervaarite are well positioned on the matrix, nicely separated, aerial, and have good contrast with the matrix.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (11/2003)

Specimen size: 8.2 × 6.3 × 2.2 cm = 3.23” × 2.48” × 0.87”

Main crystal size: 1.7 × 1.2 cm = 0.67” × 0.47”

MA88N6: Globular growths of small crystals of Olmiite whose faces are very well defined and very bright, with two degrees of color, clear cream in some areas and slightly orange in others. On matrix, with small crystals of white Quartz.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (10/2008)

Specimen size: 4.8 × 4.7 × 3.3 cm = 1.89” × 1.85” × 1.30”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”

MH31M5: A novelty of Munich 2008. The sample forms globular growths of well defined terminations of crystals. The deeper color is similar to the older pieces, classified then as Poldervaartite.
This specimen was photographed for the ‘what’s new at Munich 2008’ section of the magazine ‘Mineralien Welt’ and appears on page 18 of number 1/2009.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (10/2008)

Specimen size: 9.2 × 5.8 × 3 cm = 3.62” × 2.28” × 1.18”

Main crystal size: 2.8 × 2.1 cm = 1.10” × 0.83”

ER86P2: Very aerial on its small Muscovite matrix, the trapezohedral crystal is almost complete and has an excellent definition of its faces and edges. Color, luster and transparency are magnificent.
Sangulungulu Hill (Nani Hill), Naan village, Loliondo, Ngorongoro District, Arusha Region  Tanzania (2008)

Specimen size: 2.5 × 1.9 × 1.9 cm = 0.98” × 0.75” × 0.75”

Main crystal size: 1.9 × 1.9 cm = 0.75” × 0.75”

TG66AI8: Group of trapezohedral Spessartine crystals with very well defined faces and edges, with a very intense orange color and on orange Kyanite with small Muscovite crystals.
The sample is from the mineral reserve of John S. White whose label we will send to the buyer.
Sangulungulu Hill (Nani Hill), Naan village, Loliondo, Ngorongoro District, Arusha Region  Tanzania

Specimen size: 3 × 2.5 × 1.7 cm = 1.18” × 0.98” × 0.67”

Main crystal size: 1.6 × 1.5 cm = 0.63” × 0.59”

MG27N6: Trapezohedral crystal of Spessartine with very well defined faces and edges, translucent and having an excellent color and standing on a matrix of Mica with brownish Kyanite.
Sangulungulu Hill (Nani Hill), Naan village, Loliondo, Ngorongoro District, Arusha Region  Tanzania (2008)

Specimen size: 4 × 2.7 × 2 cm = 1.57” × 1.06” × 0.79”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”

MM26AM8: Scapolite (Group) crystal, very rich in crystal forms, with excellent terminations and very transparent and lustrous, gem quality, with a uniform yellow color.
We will send the buyer the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Mpwapwa District, Dodoma Region  Tanzania

Specimen size: 2 × 0.9 × 0.8 cm = 0.79” × 0.35” × 0.31”

TB87AL5: Alabandite crystal, highly profiled, practically a floater, with light contacts that conserve remains of Calcite matrix and formed by the dominant octahedron with the vertices truncated by the faces of the cube.
We will send the specimen in its original Perky box from the Robert J. Noble collection, which also contains the label.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 2.2 × 2.2 × 1.6 cm = 0.87” × 0.87” × 0.63”

MF89AK6: Very sharp Alabandite crystal, octahedral with cube faces, with a transparent Quartz crystal with inclusions, and two Zoisite crystals (tanzanite variety) with very well defined faces and edges, bright, transparent and with blue-violet to yellow colors.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2019)

Specimen size: 3 × 3 × 2.7 cm = 1.18” × 1.18” × 1.06”

TYB47AN5: Floater group of Diopside crystals with very sharp crystal forms and excellent terminations, between transparent and translucent, with good luster and a uniform light green color.
We will ship the specimen in its original Perky box from the Robert J. (Bob) Noble collection, which also contains the label.
Karo Pit, D-Block Mine, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 3.1 × 2.4 × 1.6 cm = 1.22” × 0.94” × 0.63”

Main crystal size: 2 × 1.4 cm = 0.79” × 0.55”

EBX87AP0: Parallel growths of rhombododecahedral Grossular crystals (tsavorite variety) extraordinarily elongated, transparent, with great luster and an intense emerald-green color, associated with Pyrite microcrystals.
A very fine specimen, uncommon in its morphology, both for the crystals and for the group.
Merelani mines, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 2.7 × 1.4 × 0.9 cm = 1.06” × 0.55” × 0.35”

ML90AG7: Dodecahedral Grossular (tsavorite variety) crystal, translucent, very bright, with a very well defined green color and on matrix, with Pyrite crystals and radial aggregates of Graphite crystals.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2018, page 90
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 3 × 1.9 × 3.5 cm = 1.18” × 0.75” × 1.38”

Main crystal size: 1.4 × 1.3 cm = 0.55” × 0.51”

TE86AL4: Group of tabular Prehnite crystals with well defined faces and edges, translucent, with an intense and uniform light blue color, good luster and a small group of Calcite crystals.
The specimen comes from the inventory of John Sampson White (# 23-10-17) whose label we will send to the buyer.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 3.4 × 2.3 × 2.2 cm = 1.34” × 0.91” × 0.87”

Main crystal size: 2.4 × 0.4 cm = 0.94” × 0.16”

MF68AK7: Spheroidal growth of Prehnite crystals with very well defined terminal faces, translucent, very bright and very intense yellow. On rock matrix, with Calcite.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2019)

Specimen size: 4.7 × 4.7 × 4.2 cm = 1.85” × 1.85” × 1.65”

Main crystal size: 1.3 × 0.5 cm = 0.51” × 0.20”

EFR68AP0: Zoisite crystal (tanzanite variety) with very sharp crystal forms, with perfect terminations, transparent, with great luster and an intense, deep and uniform lavender-blue color.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 1.7 × 0.9 × 0.9 cm = 0.67” × 0.35” × 0.35”

MA27AM6: Crystal of Zoisite (tanzanite variety) very sharp, with sharp crystal forms, perfect terminations (with a contact in one of them), transparent, with good luster and different shades of color between intense lavender blue and violet. We will send the buyer the specimen in its original perky box from the Robert J. Noble collection, which also contains the label.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 2 × 1.4 × 0.6 cm = 0.79” × 0.55” × 0.24”

ETV89AO9: Obtained at Ste. Marie 2022
Zoisite crystal (tanzanite variety) with very sharp crystal forms, with fine parallel growths and deep hopper faces, transparent to translucent, very lustrous, and with an intense, deep and uniform lavender-blue color.
Merelani mines, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 3 × 2 × 1.2 cm = 1.18” × 0.79” × 0.47”

EB26AK7: Parallel growth of Zoisite crystals (tanzanite variety), of gem quality, transparent, very bright, and exhibiting dichroic color, deep and uniform navy blue that turns reddish according to the orientation of the light.
D-Block Mine, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2016)

Specimen size: 3.4 × 1.9 × 0.9 cm = 1.34” × 0.75” × 0.35”

NG61AI3: Single crystal with very well defined faces and edges, with very transparent and bright (gem quality) terminal faces and an excellent color, intense blue with violet shades. The transition between the different colored areas on the crystal indicates it has not suffered any heat treatment.
The sample is from the Ignacio Hernández collection (num. 84) whose original label we’ll send to the buyer.
Merelani mines, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 3.5 × 1.4 × 1.3 cm = 1.38” × 0.55” × 0.51”

MX89AA8: Parallel growth of two Zoisite (tanzanite variety) crystals, one of them very elongated. They are transparent, with a very intense and uniform color and small white Prehnite crystals, whose existence testifies that the sample has not been heated to increase its color intensity.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (±2011)

Specimen size: 3.5 × 1.6 × 0.8 cm = 1.38” × 0.63” × 0.31”

Main crystal size: 3.5 × 0.7 cm = 1.38” × 0.28”

EM63T0: A crystal with very well defined faces and edges, transparent, very bright and with a doubly terminated crystal. The color is especially intense and, due to some details, we believe it is natural, not induced by heating. The "fresh" appearance of related Prehnite crystal, with some white areas that must change color when heated, and the grayish shades at the bottom of the piece, that must also turned to blue-violet, are reasons why we offer this sample as natural, not heated.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2010)

Specimen size: 3.6 × 1 × 1.2 cm = 1.42” × 0.39” × 0.47”

Main crystal size: 3.6 × 1.2 cm = 1.42” × 0.47”

MFB26AP3: Obtained at Munich 2022
A gem-quality Zoisite crystal (tanzanite variety) with Graphite inclusions, well-defined faces and edges, transparent, and with an intense blue color with violet shades. The transition between the dichroic tones of the crystal indicates that it has not undergone heat treatment.

Merelani Hills is a mining area located in the Lelatema Mountains. It is one of the most important localities in the world for the tanzanite variety of Zoisite, discovered in 1967 and mined in several blocks that have produced high-quality gem specimens.

From a geological point of view, the area belongs to the Mozambique metamorphic belt, characterized by high-grade metamorphic rocks such as gneisses and schists. Tanzanite forms under high-temperature regional metamorphic conditions, in veins and reaction zones rich in Ca, Al and V, the latter being responsible for its characteristic blue-violet color. The mineralization is associated with complex metamorphic processes with fluid influence, which favored crystallization in localized zones within the mountain range.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2019-2022)

Specimen size: 4 × 1.9 × 0.8 cm = 1.57” × 0.75” × 0.31”

EG14T0: Group of two crystals. One of them, the left one, is doubly terminated, blue with slightly greenish areas. They are transparent, very bright and with crystals of Chabazite and well formed Prehnite crystals completely coating the back side and the top of the Zoisite crystals.
This specimen was photographed and published as a novelty at the 2011 Ste. Marie Show in the magazine ‘Le Règne Minéral’, special edition, number 100, page 132, and has been referenced and figured in the book "Minéraux - Le Guide des Passionnés" (page 430)
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2010)

Specimen size: 4.2 × 4.1 × 1.5 cm = 1.65” × 1.61” × 0.59”

Main crystal size: 3.5 × 1.4 cm = 1.38” × 0.55”

EF59T0: A novelty at Sainte Marie-aux-Mines 2011. Very transparent and bright parallel growth with a pink! color that appears with special intensity in some areas of the crystal.
This specimen was photographed and published as a novelty at the 2011 Ste. Marie Show in the magazine ‘Le Règne Minéral’, special edition, number 100, page 132, the magazine ‘Rivista Mineralogica Italiana’ on page 191 in number 2011/3, and in the book "Minéraux - Le Guide des Passionnés" (page 431)
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2011)

Specimen size: 2.2 × 1.2 × 0.5 cm = 0.87” × 0.47” × 0.20”

TM81AH6: A very sharp Diopside crystal with very well defined faces and edges and a perfect termination, very rich in faces. It is bright, completely transparent, with a very intense and uniform color and has small Graphite inclusions.
We’ll send the sample in its original Perkin’s box from the R.J. Noble collection, also containing the collection label.
Samax Mine, Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 2 × 0.7 × 0.4 cm = 0.79” × 0.28” × 0.16”

TH26S3: A novelty at Tucson 2010. With the exceptional Tanzanite with Prehnite also appeared from Merelani some crystals of Diopside of notable size. This one has an excellent development of the upper terminal faces. It is transparent with an intense color and has an associated curious dark Titanite crystal that we analyzed. It also has small crystals of graphite on the back side.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2010)

Specimen size: 4.4 × 2.5 × 1.7 cm = 1.73” × 0.98” × 0.67”

Main crystal size: 3.2 × 1.6 cm = 1.26” × 0.63”

EA27W1: Aggregate of very elongated and flattened prismatic crystals with good terminations. They are translucent, bright and have an unusual and really intense green color, very rare for the species. Another representative species from Merelani.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania (2011)

Specimen size: 7 × 1.6 × 1 cm = 2.76” × 0.63” × 0.39”

TD47AI8: Floater parallel aggregate of doubly terminated Dravite crystals that are between transparent and translucent, very bright, with inclusions and that have a uniform dark brown color.
The sample is from the mineral reserve of John S. White whose label we will send to the buyer.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2020, page 60
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 4.7 × 1.6 × 1.5 cm = 1.85” × 0.63” × 0.59”