Sphene

Raw Sphene Jewelry, Handmade in Japan

Explore TROZO's raw sphene necklaces, rings and ear cuffs — each built around a real, uncut sphene 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.

Sphene (titanite) is a calcium-titanium silicate, CaTiSiO₅, monoclinic, Mohs 5–5.5. Its great distinction is a dispersion of 0.051, surpassing diamond’s 0.044 — a fierce “fire” that scatters rainbow sparks at every turn. Its mineral name “titanite” reflects its titanium; the gem name “sphene” is from the Greek *sphenos* (“wedge”), for its wedge-shaped crystals. Colorful and strongly pleochroic, it is a rare stone and a modern July birthstone.

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