Moonstone Madagascar, 0.691 carat

Technical details: Type: Madagascar Moonstone Weight: 0.691 carats Shape: Cushion Color: Multicolored (Rainbow) Clarity: Moderately Included Transparency: Translucent Hardness: 6.0-6.5 Treatment: Untreated Origin: Madagascar Certification: Electronic certificate (PDF) from Saudi Laboratory (MT) - Website (www.mtgl.com.sa) Moonstone is a gemstone belonging to the feldspar minerals group, known for a unique optical phenomenon called "adularescence," where a blue or white glow like moonlight appears to flow across its surface when moved. Moonstone is primarily composed of thin layers of albite and orthoclase. This stone is usually found in pegmatite rocks, marble, and some volcanic rocks.