JDMISGem Reference
Cnidarian (colonial marine animal skeleton) · Coral

Conchiolin Coral

Conchiolin Coral — Coral

Conchiolin (horny) coral - black and dark brown Antipathes branches - is a protein material with RI about 1.56, tree-ring growth structure and a burnt-hair hot point, CITES-regulated.

Colour
grey
Transparency
Opaque
RI
1.560–1.570
SG
1.30–2.12
Mohs
3.0–4.0
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