Moonstone Madagascar, 1.959 carats

Technical details: type: Madagascar Moonstone (Moonstone) weight: 1.959 carats shape: pear shape 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 mineral group, and is 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.