Collection: Tanzanite

Raw Tanzanite Jewelry, Handmade in Japan

Explore TROZO's raw tanzanite necklaces, rings, ear cuffs and earrings — each built around a real, uncut tanzanite rather than a cut and polished stone. Many are set in sterling silver. Every piece is handmade in Japan, and as one-of-a-kind raw stone it is truly unique.

Tanzanite (blue zoisite) is a rare stone found only at the Merelani mine in Tanzania. Discovered by the Maasai in 1967, it was named “tanzanite” and brought to market by Tiffany’s president Henry B. Platt — the world’s newest gem name. Its formula is Ca₂Al₃(SiO₄)(Si₂O₇)O(OH), orthorhombic, Mohs 6–7. Vanadium replacing aluminium gives its deep blue-to-violet gradation and strong pleochroism. It is December’s birthstone, rare in both stone and story.

TROZO works every tanzanite unpolished, setting it so its natural colour and form lead the design — handmade in Japan, and no two raw stones alike.