Chemical composition: Al3Be2[SiO4]3 Crystallization characteristics: The garnet family belongs to equiaxed crystal gemstones. It is an island-shaped silicate in the crystal structure. The common crystal forms are rhombohedral dodecahedron, tetragonal octahedron and polymorphic shape. Crystal system: is an equiaxed crystal system. Refractive index: 1.74-1.90. Hardness: 7-8. Garnet Density: 3.5-4.3 g/cm 3 . Origin: Sri Lanka, India, Madagascar, the United States, China and other countries. Gem-grade garnet minerals have been found in more than ten provinces and autonomous regions in China. Color: varies from breed to breed Magnesium aluminum garnet: red, purple, yellow Aluminium garnet: brown, dark red, purple Manganese garnet: yellow orange · orange red Calcium aluminum garnet: brown yellow · yellow · yellow green · green Calcium iron garnet: yellow green, emerald green, black Calcium garnet: green SHAOXING OCEAN CO., LTD , https://www.sxgarments.com