NK57K9: An excellent miniature of sharp faces and edges, with a very well defined twin. Excellent transparency, luster and color, which resembles honey. Crystals are partially covered by white Dolomite.
The specimen has been reviewed and published in the magazine ‘Lapis’ on page 23, volume 36, number 7-8, July-August 2011 and on the Mineralogical Record´s web page, in the ‘What's New’ section of the March 13, 2008 edition.
Áliva Mine (Las Mánforas Mine), Áliva mining area, Picos de Europa massif, Camaleño, Comarca Liébana, Cantabria  Spain

Specimen size: 2 × 1.5 × 1.3 cm = 0.79” × 0.59” × 0.51”

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