Gemart Services

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet Yttrium Aluminum Garnet, or YAG for short, is an early diamond simulant from the 1950's. Sometimes called Alexite, Diamite, Diamondite, Diamonair, etc, etc, it has an excellent refractive Index of over 1.83 with a hardness of 8.5. The dispersion does not match diamond and it is quite dense with a Specific gravity of 4.5 vs diamond at 3.5.

This colorless example designed and cut by Jeremy is named "Octagon Ultimatum". It has just 65 facets and has an apex crown design. The sparkle is incredible and is impossible to capture accurately in a photograph. I can send many photos taken in my attempt to capture it's beauty.

It will make an outstanding pendant visible across the room!

« view the complete gem list