1.59 ct. Tanzanian Wurtzite
Color: Dark Reddish-Brown
Clarity: Eye Clean
Origin: Merelani, Tanzania
Cut: Rectangular Step
Treatments: None
Measurements: 6.3 x 6 mm
Wurtzite is a highly unusual species to found in gem quality, prior to this Tanzanian find it has never been documented. We saw a precious few of these (the crystals are quite pricey, so gem rough is particularly scarce) and this gem is one of the largest and cleanest that the find produced - great luster and a deep but still brilliant color. Large and excellent quality for these rarities. You can read a little more about the initial find here at GIA’s Gems & Gemology.