JDMISGem Reference
Man-made product (synthetic garnet-structure crystal) · YAG (Yttrium Aluminium Garnet)

YAG

YAG — YAG (Yttrium Aluminium Garnet)

The 1970s diamond substitute with real durability: SR 1.833, SG 4.55, hardness 8.25, low fire. See-through windows and flawless clarity distinguish it from both diamond and garnet.

Colour
colourless to white
Transparency
Transparent
RI
1.833
SG
4.50–4.60
Mohs
8.3
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