WHITE SAPPHIRE UNHEATED LUSTROUS BRILLIANT CUT GEM - 18923. 5.6 x 3.1 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.
White Sapphires - Sri Lanka is well known for the finest quality sapphires. The colorless is the White Sapphire the closest natural substitute for Diamond. Its hardness is next to Diamond with outstanding brilliance.Mining continues from ancient times to this day. Sri Lanka is known for producing the largest sapphires in the world. The item "CEYLON WHITE SAPPHIRE UNHEATED NATURAL LOOSE GEMSTONE 18923" is in sale since Thursday, December 28, 2017. 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.