3mm Round Faceted Machine-Cut Amethyst | AA-Grade | 90007

This AA-grade round machine-cut amethyst features a lively, deep-purple color saturation that complements a variety of metal colors and gemstones. Use it by itself for simple earring or ring designs, or highlight the color by pairing it with contrasting-color stones to create more complex, multicolor designs. Amethyst is the birthstone for February.Amethyst is the best known and most valuable form of quartz. The light-to-dark purple color of natural amethyst is caused by iron or manganese compound impurities in the mineral and can range from a watercolor pale pink to a dark, almost opaque, purple. A single stone will often show color zoningangular zones of light and dark colors. Specifications: Cutting Center : Thailand Mineral source : Africa Stone size : 3mm Stone(s) shape : Round Material : Amethyst Stone type : Natural Clarity : Eye-clean Grade : AA Mohs hardness : 7 Refractive index : 1.5441.553 Enhancement : Heat-treated (H) Specific gravity : 2.632.65 Please Note: Care: Clean with warm, soapy water. Ultrasonic cleaning is usually safe; never steam clean. Unless precisely calibrated to an exact size, gemstone sizes vary slightly. Yu Yo’s allows a tolerance of +/ 0.1mm for gemstones 4mm and smaller.