Dims: 1.1x0.3x0.2" (2.8x0.8x0.5cm)
Wt: 0.13oz (3.6g)
Thomas Range, Utah, USA
This topaz crystal is transparent and golden near the point, but the bottom of the crystal is opaque due to coatings and inclusions of ryolite. The topaz has an interesting crevice of transparency. The only damage (other than where it was separated from the host ryolite) is the tip of the crystal, which has been neatly cleaved off showing the perfect basal cleavage of topaz. There are also several tiny black bixbyite crystals present - a loupe is needed to examine these. Inside the topaz, a loupe reveals that the inclusions are fine, lacy, transparent crystals of an unidentified mineral.