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The difference between cultivated diamonds and moissanite

November 11, 2022

The difference between lab-grown diamonds and moissanite

Source differences

① Source of Moissanite

Moissanite was first found in meteorites and its main component is silicon carbide, however, completely natural moissanite can only be found around craters, which means that it can be even rarer than diamonds; while 99.99% of the moissanite we buy on the market is made from artificial synthesis.

Lab-grown diamonds

Commercially available lab-grown diamonds are made from laboratories and are produced by two main methods.

– Chemical Vapor Deposition (CVD) laboratory lab-grown diamonds: completely simulates the growth process of natural diamonds by reproducing the reaction of the carbon element layer on the ground and converting the graphite into lab-grown diamonds.

– High temperature and high pressure (HPHT) laboratory laboratory cultivation of diamonds: from the size of sand or flakes of natural diamonds as the mother, in the laboratory through chemical weather precipitation method slowly “grow” into diamonds.

2, the nature of the difference

Although lab-grown diamonds are also produced from the laboratory, their properties are exactly the same as those of natural diamonds, while moissanite is completely different. The main aspects are as follows.

– Crystal structure: Lab-grown diamonds are “cubic”, moissanite is “hexagonal”.

– Chemical structure: lab-grown diamond “c”, moissanite “sic”

– Dispersion: lab-grown diamond “0.044”, moissanite “0.104”

– Refractive index: lab-grown diamonds “2.42”, moissanite “2.65”

– Density: lab-grown diamonds “3.52”, moissanite “3.21”

– Hardness: lab-grown diamonds “10”, moissanite “9.25”