JDMISGem Reference
Vesuvianite group · Idocrase (Vesuvianite)

White-Grey Idocrase

White-Grey Idocrase — Idocrase (Vesuvianite)

White-grey idocrase is a minor ornamental aggregate, mostly seen as veining within californite. Spot RI about 1.71 separates it from common white lookalikes.

Colour
grey
Transparency
Translucent to opaque
RI
1.713–1.718
SG
3.32–3.45
Mohs
6.5
🔒 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

Water Opal (Colourless) Colourless Sapphire Synthetic Quartz Colourless Fluorite

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