Moonstone Madagascar, 1.326 carats

Technical details: type: Madagascar Moonstone (Moonstone) weight: 1.326 carats shape: emerald (Emerald) color: multicolored (rainbow) clarity: moderately included translucency: 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, and is known for a unique optical phenomenon called "adularescence," where a blue or white glow resembling 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.