Dumortierite
Structure : OrthorhombicHardness : 7
Specific Gravity : 3.28
Refractive index : 1.69 - 1.7
Doubly Refracting (bi-refraction) : 0.037
Copyright © Friday 10/11/2024 GLI.
Designed by 4ss.net
Privacy Policy | Links | Gemstone Information | Translate to Japanese | Translate to French | Master Cut Gems | Sold Items Gallery