Titanite group · Sphene (Titanite)

Sphene

Sphene (titanite) is a golden to green collector gem whose 0.051 dispersion and 0.10+ birefringence deliver rainbow fire with visible doubling. RI 1.90-2.03, biaxial positive, SG 3.52. Too soft for unprotected rings but spectacular in pendants and earrings.

Colour
brown

Transparency
Transparent

RI
1.900–2.034

SG
3.50–3.54

Mohs
5.0–5.5

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