Synthetic Moissanite

Moissanite is a new product but its origins go back to 1893 when Dr. Henri Moissan, a French chemist and later a Nobel Prize winner, identified minute quantities of natural silicon carbide, known as lusenite, in the Diablo Canyon meteorite found in a remote area of Arizona. Recently, these elements were replicated in a synthetic material to produce a synthetic gemstone with similar properties to diamond. The gemstone is more brilliant than diamond, Refractive Index 2.65-2.69, has a higher lustre than diamond at 20.4%, and a hardness of 9.25 , diamond being 10. Relative Density: 3.21. Because moissanite replicates a diamond so well, it could be sold as a diamond to the unwary buyer.

 

Properties
Refractive Index (Brilliance) Dispersion (Fire)
Luster
Mohs Hardness
Toughness
Specific Gravity
Synthetic Moissanite
2.65 – 2.69
0.104
20.4%
9.25
Excellent
3.21
Diamond
2.42
0.044
17.2%
10
Good
3.52
Cubic Zirconia
2.17
0.066
N/A
8.25
Good
5.80
Sapphire
1.77
0.018
7.4%
9
Excellent
4.00
Emerald
1.58
0.014
4.8%
7.5
Good to Poor
2.72

 

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