Kalsidoni Indian, 11.846 carats

Technical details: Type: Indian Chalcedony (Chalcedony)Weight: 11.846 caratsShape: OvalColor: GreenClarity: Uncategorized (Uncategorized)Transparency: OpaqueHardness: 7.5-8.0Treatment: Dye TreatmentOrigin: IndianCertification: Electronic certificate (PDF) from Saudi Laboratory (MT) - website (www.mtgl.com.sa)Chalcedony is a fine crystalline form (microcrystalline) of quartz mineral, composed of silicon dioxide. Chalcedony is characterized by its waxy or glassy feel and transparency ranging from semi-transparent to opaque. It appears in a wide range of colors, such as white, gray, blue, brown, and red, and often originates from silica-rich solution deposits in rock cavities. Many gemstones, such as agate, jasper, and carnelian, are different types of chalcedony.