Indian tiger eye stone, 13.712 carats

Technical details: Type: Tiger's Eye Weight: 13.712 carats Dimensions (mm): 20.87x11.31x5.18 Shape: Rectangular Color: Black and gold Clarity: Included Transparency: Opaque Hardness: 7.0 Treatment: Untreated Origin: India Certification: Laboratory certificate (MT) Saudi Arabia - website (www.mtgl.com.sa) Tiger's Eye is a type of fine-grained quartz (Microcrystalline Quartz), known for its shiny silky luster that resembles a cat's eye or tiger's eye, a visual phenomenon called "Chatoyancy." This stone is composed of fine fibers of crocidolite (a mineral of asbestos) that have transformed into silica while maintaining their fibrous shape, creating luminous streaks of gold and brown when light reflects on it. Tiger's Eye typically forms in metamorphic rocks.