serendibite

Serendibite is a rare gemstone that belongs to the silicate mineral group. Its chemical formula is Ca4Mg2Al12Si2O22(OH)2. The name "serendibite" comes from Serendib, the ancient Arabic name for Sri Lanka, where the mineral was first discovered. This gem is known for its striking pleochroism, meaning it can display different colors when viewed from different angles. Typically, serendibite exhibits shades of blue, green, and sometimes yellow or brown. Its hardness on the Mohs scale is between 6.5 and 7, making it relatively durable.

Serendibite is found in metamorphic rocks, often associated with other rare minerals. Its rarity and unique color properties make it highly sought after by collectors and gem enthusiasts. Faceted serendibite gemstones are uncommon due to the limited availability of high-quality material. The refractive index of serendibite is around 1.679-1.700, and it has a vitreous luster. While primarily known for its ornamental value, the geological conditions required for its formation make it an interesting subject for mineralogists.