Description Exclusive, elegant and chic, this Calibrated 4.0 Ct Round Black Sapphire Created Gemstone RCG0400-BLS has superior quality Art Masters Gems are known for. Sustainably grown and precisely cut for your fine jewelry, this half carat blue sapphire is a sight to behold. Includes: * 1 x round 4.0 carat (10.0 mm diam calibrated) lab created black sapphire * Deluxe gemstone box Gemstone Specifications: * Name: Black Sapphire * Color Range: Black * Origin: Lab Created Synthetic * Creation Method: Skull Melt * Gemstone Material: Zirconium Dioxide * Hardness: 8.0 to 8.5 on Moh Scale * Chemical Composition of Material: ZrO2 * Shape / Cut: Round Diamond, Very Good Cut * Carat Weight: 4.0 Carat (diamond standard) * Carat Weight Setting Size: 4.0 Carat (diamond standard) * Dimension: 10.0 mm round diameter (approx) * Quality Grade: AAAAA, Show Grade * Luster: Excellent, Glossy * Brightness and Reflective Index: Excellent, 2.17 Actual * Market Availability: Limited Features: * Style: Timeless, Modern * Gemstone Collection: Royal Highness * Occasions: Engagement, Wedding, Anniversary, Special Gift * Setting: 4.0 Carat Standard Fine Jewelry Mountings and Settings * Master Cut and Hand Polish * Conforming to Benchmark Standards * Visual Appeal and Elegance * Ship from California Delivery: * Free USPS insured delivery within United States * Free USPS Express insured int’l delivery world wide Terms: * Gemstone carat weights for calibrated stones are in diamond standards: * Gemstone measurements and totals calibrated and conform to highest quality standards for type quality composition, cut, color, and may differ slightly. * Gemstone images are professional catalog renderings in 3d and conform to sRGB digital color standard matching real life gemological color range for gemstone type. * Gemstone image visual perceptions may differ slightly from screen type and resolution. 100% Satisfaction Guarantee Art Masters Gems Calibrated 4.0 Ct Round Black Sapphire Created Gemstone RCG0400-BLS Art Masters Gems
