Sri Lankan moonstone, 3.788 carats

Technical details: Type: Sri Lankan Moonstone (Moonstone) weight: 3.788 carats shape: cabochon (Cabochon) color: white clarity: eye-clean transparency: semi-transparent (Semi-Transparent) hardness: 6.0-6.5 treatment: untreated origin: Sri Lankan certification: electronic certificate (PDF) from (MT) Saudi laboratory - 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 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.