Saphir (gris) Cristal de roche / Rock crystal Sky blue topaz is a

Sky blue topaz is a pretty sky blue

Paire de calcite vert pâle

Shape: Faceted Trillion

orange and green

They are also all non-pierced

Saphir (gris) Cristal de roche / Rock crystal Sky blue topaz is aSapphire is one of the four large gemstones along with diamond, emerald, and ruby. It belongs to the corundum family which also includes rubies and blue sapphires. All corundums have the same chemical composition and the same crystal system, however a tiny amount of "trace elements" is responsible for the color. Variety: Corundum Grey color Dimensions : 7. 76 x 4. 30 mm Weight: 0. 50 ct Shape: Fancy Treatment: Heating Hardness: 9 Actual product colors