Collection: Cavansite

Raw Cavansite Jewelry, Handmade in Japan

Explore TROZO's raw cavansite earrings — each built around a real, uncut cavansite rather than a cut and polished stone. Every piece is handmade in Japan, and as one-of-a-kind raw stone it is truly unique.

Cavansite is a hydrated calcium vanadium silicate, Ca(VO)Si₄O₁₀·4H₂O, orthorhombic (Pcmn), Mohs 3–4. A rare phyllosilicate, it forms deep sky-blue rosettes of radiating needle crystals. Its color comes from vanadium V⁴⁺ entering the structure as a vanadyl group (VO²⁺), whose d¹ electron absorbs red light by a d–d transition — a coloring mechanism found in no other blue mineral. Found at Owyhee Dam in Oregon in 1967 and named by Staples and others in 1973, the market mainstay today is the Wagholi quarry in Maharashtra, India — blue crystal flowers in the cavities of Deccan basalt.

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