BLUE SAPPHIRE UNHEATED 0.91 CARATS - 18499 GORGEOUS GEM FOR ENGAGEMENT RING. 6.32 x 4.78 x 3.78 mm. 100% Natural - Not treated in any way.Beautiful Center-stone for an engagement Ring. Will make a Gorgeous Ring or Pendent accented with Diamonds.
Gem with High Lustre and Good Clarity. Large Sizes are Extremely Rare! A Gem of Lasting Beauty. UNHEATED SAPPHIRES - Almost all Sapphires mined Raw or Geuda form are Heat Treated to high temperatures to induce color and to enhance clarity and lustre. This process is now the Industry Standard for Sapphires.
Certified "No Thermal Treatment" (Please see Certificate). This gem is 100% Natural with Natural color.
Not Treated in any way. Refractive Index: 1.759-1.778 Hardness: 9 Chemical Comp: AL22O3 Density: 4.00 Crystal Group: Hexagonal The Sapphire belongs to the corundum group, with excellent hardness, exceeded only by Diamond the hardest mineral on Earth. The oldest sapphire finds are in Ceylon, or Sri Lanka as it is known today where they are mined from ancient times. Ceylon sapphires are recognized by the luminosity of their light to mid-blue colors. Ranging from blue to purple and pink.
Top-quality sapphires are extremely rare. Beauty, magnificent color, transparency, and durability are the main features. Color determines the value of a sapphire. Sri Lanka is known for the finest and the largest sapphires in the world.
The item "CERTIFIED BLUE SAPPHIRE UNHEATED 0.91 CARATS CEYLON NATURAL LOOSE GEMSTONE 18499" is in sale since Thursday, November 19, 2020. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Sapphire\Natural Sapphires".The seller is "cresla" and is located in Colombo. This item can be shipped worldwide.