Star Sapphire Double Star Medium Gray 2.63 Cts 18213 - Rare Collectors Gem
| Product Code: | 18213 |
| Availability: | In Stock |
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$99.00
| Carats | 2.63 |
| Size | 7.6 x 6.7mm |
| Color | Medium Gray |
| Clarity | Opaque |
| Shape | Oval |
| Treatment | None |
| Origin | Sri Lanka |
| Location | Colombo,Sri Lanka |
| Price | $ 99.00 |
100% Natural - Not treated in any way.
Rare Colectors Gem.
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Beautiful sharp Star effect.
Among the Rarest of gemstones.
Asterism (or Ray Effect) is best seen in Bright Sunlight or by focussing a Flashlight on the face of the gem.
R.I. : 1.759-1.778 Hardness :9
Chemical Comp. : AL2O3
Density : 4.00
Crystal Group : Hexagonal
Star Sapphires display a 6 rayed star - By light reflecting off the silky crystallizations of rutile inside called asterism.Star Sapphires are Corundum from translucent to opaque and comes in a range of colors but the finer Blues, Reds, Green yellow orange and Padparaschas are extremely rare. Some color-change Corundum also displays asterism, and are called Color-change Star Sapphires which are rare and sought-after by collectors and connossiers alike.Top-quality sapphires are extremely rare. Beauty, magnificent colour, transparency, and durability are the main features. Color and asterism determines the value of a star sapphire. Highly saturated medium or dark medium tones are best. Sri Lanka is well known for the finest quality sapphires, and the largest sapphires in the world.
Rare Colectors Gem.
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Beautiful sharp Star effect.
Among the Rarest of gemstones.
Asterism (or Ray Effect) is best seen in Bright Sunlight or by focussing a Flashlight on the face of the gem.
R.I. : 1.759-1.778 Hardness :9
Chemical Comp. : AL2O3
Density : 4.00
Crystal Group : Hexagonal
Star Sapphires display a 6 rayed star - By light reflecting off the silky crystallizations of rutile inside called asterism.Star Sapphires are Corundum from translucent to opaque and comes in a range of colors but the finer Blues, Reds, Green yellow orange and Padparaschas are extremely rare. Some color-change Corundum also displays asterism, and are called Color-change Star Sapphires which are rare and sought-after by collectors and connossiers alike.Top-quality sapphires are extremely rare. Beauty, magnificent colour, transparency, and durability are the main features. Color and asterism determines the value of a star sapphire. Highly saturated medium or dark medium tones are best. Sri Lanka is well known for the finest quality sapphires, and the largest sapphires in the world.
