JDMISGem Reference
Organic · Ivory

Ivory

Ivory — Ivory

True ivory - dentine from elephant and allied species - is a soft, warm white carving material identified by Schreger cross-hatching, now restricted to documented antiques and legal fossil mammoth.

Colour
orange
Transparency
Translucent edges to opaque
RI
1.535–1.540
SG
1.70–2.00
Mohs
2.3–2.8
🔒 Full JDMIS reference record

Sign in to unlock price ranges by tier, common misidentifications, diagnostic inclusions, treatments, spectra, trade names and sources — free with the GT200 Gem Identification course.

GT200 Gem Identification ↗ Sign in

Related gems

White Serpentine Synthetic Opal — White Yellow-Brown Serpentine Colourless Spodumene

Browse the free gem reference · Test your eye — the Great Gem Quiz · Singapore gem testing labs

JDMIS Gem Identification Methods (GT200) Artisan Archetype Quiz Name That Gem Singapore Gem Labs How to Identify Jade