Organic (fossilised wood — gem-quality lignite) · Jet

Jet

Jet is the Victorian mourning classic — warm, light, black as velvet and unmistakable once hefted. Genuine Whitby pieces are antiques with a following; everything else black on the market must be separated by weight, feel and the hot point.

Colour
grey

Transparency
Opaque

RI
1.640–1.680

SG
1.30–1.34

Mohs
2.5–4.0

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