Description
Spinel Gemstone 3.25ct
Description
This Natural Spinel is Gemstone Which is Dark Purple Color, it’s Originates from Ceylon and its Exact Weight is 3.25ct the Measurements are 9.46×8.90×5.22mm. The Shape and Cut of This Stone are Oval Mixed Cut. It’s Graded Transparent and Clarity is Excellent. This 3.25ct Dark Purple Natural Spinel Gem is Available for Ready to Ship Anywhere in The World. You Can also Select Certification and Shipment Method as Optional.
Details
Summary No | AK04366 |
Species | Natural Spinel Gemstone |
Weight | 3.25ct |
Shape/cut | Oval Mixed Cut |
Colour | Dark Purple |
Dimension | 9.46×8.90×5.22mm |
Clarity | Excellent |
Transparency | Transparent |
Origin | Ceylon |
Treatment | None |
Spinel Gemstone 3.25ct
Properties Of Spinel Gemstone
Chemical Composition: MgAl2O4 (Magnesium aluminum oxide)
Hardness: 7.5 – 8.0Moh
Specific Gravity (Density): 3.58 – 4.10 (g/cm3) (increasing with Fe and Zn content)
Refractive Index: 1.72 – 1.80(SR)
About: Spinel Gemstone
The Spinel Group of minerals includes Spinel, Gahnite, Galaxite, Hercynite, and Magnesiochromite. Although Spinel is most famous for its red variety, it is also found in other colors such as green, blue, purple, brown and black. The blue Spinel is colored by cobalt and is quite beautiful. Star Spinels and color-change Spinels are also (rarely) found.
Spinel is a historically important gem because it has been mistaken for Ruby in some very famous crown jewel collections. Perhaps the most famous of these is the Black Prince’s Ruby set in the British Imperial State Crown (Crown Jewels of England). It is estimated to be 170 karats. Originally thought to be a large Ruby, it was later proven to be a fine Spinel. Although Spinel gems are usually small, 3 karats or less, very large gems have been cut. The largest is probably the 520 karat gem found at the Banque Markazi in Teheran, Iran.