GG37AK0: Group of octahedral Fluorite crystals on a matrix of white Quartz crystals, with polycrystalline surfaces showing the faces of the cube. The crystals have an unusual black color for Fluorite (antozonite variety). The sample is from the Casado Margolles collection (number FRM 48) whose record we will send to the buyer.
The specimen is from the James Catmur collection and we’ll send the label with it.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 598 in the volume 53, number 5, September-October 2022

Akchatau, Shet, Karaganda Region  Kazakhstan

Specimen size: 8.1 × 6.4 × 2.7 cm = 3.19” × 2.52” × 1.06”

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