Zoisite 4.38 ct
Zoisite is the mineral name for Tanzanite. When Tanzanite is mined, it is usually not blue. In the trade, only blue Zoisite is marketed as "Tanzanite," similar to how red corundum is marketed as ruby and not as red sapphire. Most Zoisite found is brownish and achieves its blue color through heat treatment.
In this case, however, this is an entirely untreated Zoisite from Tanzania, naturally displaying a bicolor pattern of brown and violet. This makes it a rare bicolor Zoisite.
This bicolor Zoisite from Tanzania features violet and brown hues and weighs 4.38 carats. The stone measures approximately 9 millimeters in length, 8 millimeters in width, and 6 millimeters in depth.
This bicolor Zoisite is eye-clean. The transparent Zoisite has been cut into a faceted octagon, with the crown featuring three tiers of facets and the pavilion four tiers of facets.
This Zoisite would be excellent for crafting into a ring stone or a pendant by a goldsmith of your choice.