JDMISGem Reference
Spinel · Spinel

Black Spinel

Black Spinel — Spinel

Black spinel is the opaque iron-rich member, prized in fashion jewellery for a mirror-bright, facet-crisp black at modest cost.

Colour
grey
Transparency
Variable
RI
1.718–1.770
SG
3.58–4.10
Mohs
8.0
Birthstone
August
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