Tags: Chemical Substance, Mineral.
Gadolinium Gallium Garnet (GGG Gd3Ga5O12) is a synthetic crystalline material of the garnet group with good mechanical thermal and optical properties. It is typically colorless. It has cubic lattice density 7.08 g/cm³ and Mohs hardness is variously noted as 6.5 and 7.5. Its crystals are made by Czochralski method and can be made with addition of various dopants for modification of color.