Sunstone

Sunstone from India Size- 5.2cm x 3.9cm x 3cm Weight- 82g You will receive the item in the photo Sunstone is an optical-phenomenon gemstone in the feldspar family. It has sparking aventurescence (or schiller) caused by internal mineral inclusions. Mineral class: feldspar (aluminosilicates) Crystal system: sunstone crystallizes in one of two systems depending on the exact host feldspar. - Triclinic : typical for plagioclase including the famous Oregon sunstone which features native copper flakes Monoclinic- typical for potassium feldspar like orthoclase. Rock formation: Primary host rocks- sunstone generally crystallize deep underground in intrusive or extrusive igneous environments where molten magma cools slowly. They form in- *basalt flowes *Granite and syenite pegmatites *felsic igneous rocks Hardness- 6.0-6.5 on the MOHs scale