QTY/WT: 107.82 cts Citrine Gemstone Basic Properties Table Chemical Formula Silicon dioxide (SiO2) Color light yellow to dark yellow, gold-brown Hardness 7 on the Mohs scale Crystal System Hexagonal (trigonal); hexagonal prisms with pyramids Refractive Index 1.544 - 1.553 Transparency Transparent Cleavage None Fracture Conchoidal, very brittle
