ROYAL BLUE SAPPHIRE 0.96 CTS 15737 FINEST COLOR OF BLUE SAPPHIRE. 6.3 x 5.5 mm. Beautiful Center-stone for an engagement Ring. Heated to enhance Luster and Color - The industry standard for Sapphire.Will make a Gorgeous Ring or Pendent accented with Diamonds. Large Sizes are Extremely Rare! A Gem of Lasting Beauty.
Blue Sapphire: The most sought after color of Sapphire Chosen as the ideal gift for Royalty. Refractive Index: 1.759-1.778 Hardness: 9 Chemical Comp: AL2O3 Density: 4.00 Crystal Group: Hexagonal. Blue Sapphire is the National gemstone of Sri Lanka (Ceylon). Sri Lanka has been famous for Blue sapphire for the past 2000 years as recorded by Historians and Travelers like Pliny, Fa hien, Ibn Batuta, Marco Polo etc.World famous Blue Sapphires to name a few, The Blue Belle of Asia, the Blue giant of the orient. Gems Fit for Royalty: Queen Elizabeth 2nd was gifted with a large Blue Sapphire when she visited Ratnapura in the 1970's. This later adorned the necklace of the late Princess. Diana and now is in the Engagement Ring of Kate Middleton. Sapphire is a variety of Corundum which is the crystalline form of alumina. Blue color comes with the presence of Iron and Titanium. I and Luster makes if a very attractive gemstone when cut and polished.