-- Stone --> Amethyst Aquamarine Blue topaz Citrine Coral Demantoid Diamond Emerald Garnet Kunzite Kyanite Mix Opal Pearl Peridot Quartz Ruby Sapphire Spinel Tanzanite Tiger's eye Tourmaline Tsavorite Turquoise -- Cut --> Baget Beeds Briolette Cabochon Carving Cushion Emerald cut Fancy Cut Heart Marquis Mix Oval Pear Rose Cut Round Trilliant -- Quality --> Commercial Exeptional Top Good -- Weight --> Less 1 ct 1-2 ct 2-3 ct 3-4 ct 4-5 ct 5-10 ct 10-20 ct Above 20 ct Keyword: