Sunstone, 2.44 carats

Technical details: Type: Unknown Sunstone (Sunstone) Weight: 2.44 carats Shape: Oval Color: Orange Clarity: Unclassified Transparency: Translucent Hardness: 6.0-6.5 Treatment: Untreated Origin: Unknown Certification: Electronic certificate (PDF) from Saudi Laboratory (MT) - Website (www.mtgl.com.sa) Sunstone is a gemstone belonging to the feldspar group, and is known for a distinctive optical phenomenon called "Aventurescence," where it shows a bright flash or metallic luster when moved. This effect is attributed to small inclusions of hematite or goethite minerals or sometimes copper, which reflect light. The color of Sunstone usually ranges from orange, red, golden, or yellow-green, and can be transparent to translucent. This stone forms in igneous and metamorphic rocks.