This Specimen has been sold.
1.9" Biotite, Topaz & Feldspar Association - Namibia
This is a unique association of feldspar, biotite crystals and a somewhat shrouded, colorless topaz crystal, collected from the Erongo Mountains of Namibia.
Feldspars are a group of rock-forming tectosilicate minerals. It is also one of the most common minerals on earth, making up nearly 60% of the crust.