JDMISGem Reference
Borates (inoborate) · Howlite

Howlite

Howlite — Howlite

Natural white howlite offers the look of turquoise matrix without the price, and dyed howlite floods the market as its most convincing imitation. Teach students the spot RI and dye-in-cracks checks as a first-line screen.

Colour
yellow
Transparency
Opaque
RI
1.586–1.605
SG
2.45–2.58
Mohs
3.5
🔒 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

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