EP49AC6: Floater aggregate of transparent and very bright Quartz (variety amethyst) crystals, with phantom growths and with a very vivid and intense color. On the back, the aggregate is completely coated by Calcite and there is a very sharp, white, Calcite scalenohedron.
An excellent sample of the F. y C. Gilbert collection whose label we’ll send to the buyer.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 556 in the volume 47, number 5 (September-October 2016)
Guanajuato, Municipio Guanajuato  Mexico (±1960)

Specimen size: 7.4 × 5.5 × 2.6 cm = 2.91” × 2.17” × 1.02”