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There are two types of stones we use for jewelry: High Carbon Gemstone and Moissanite Stone.

1. High Carbon Gemstone

High carbon diamonds are not simulated diamonds, but gemstones with more fire than diamonds. High-carbon diamonds have a higher refractive index and luster than South African diamonds, and more than 2.5 times the fire of South African diamonds. The only downside is that high carbon diamonds are not as hard as moissanite or natural diamonds, and they will not pass the diamond test.


2. Moissanite Stone

These beautiful stones are near-colorless gemstone that’s composed of silicon carbide- an extremely rare, naturally-occurring mineral. It has a similar appearance as a real diamond and the only gemstone that passes as a diamond on a standard handheld diamond point tester. Our moissanites are more heat resistant than even diamonds, meaning that even if they were in a fire, they would still retain their sparkle and form. They have a Refractive Index (RI) of 2.65 whereas diamond’s RI is lower at 2.42. Moissanite has an extremely high level of brilliance and excellent light performance. This is one reason it is a favorite stone in engagement rings as it has much higher brilliance and fire than a diamond. The hardness of diamond is about 10 and moissanite is about 9.25. Our moissanite has its unique waist code, and it is certified by the international famous professional appraisal organization and the global gemstone Research Association (GRA).

We only use D-F color and VVS1 Clarity all in excellent cut. Will pass the diamond test. More brilliant than diamond at a fraction of the cost. Hedy Jewelry- Moissanite is among the hardest minerals on earth, more durable than sapphire, ruby, or emerald.

Will it pass the diamond test? Yes.

What is Moissanite?

Moissanite is a gemstone born from the stars. It was first discovered in 1893 by a French scientist named Henri Moissan, who later won the Nobel Prize in Chemistry. He discovered microscopic particles of the gem that would eventually bear his name in Arizona, in a crater created by a meteorite that fell to Earth. He initially thought that he had discovered diamonds, but later determined that the crystals were composed of silicon carbide.

Natural moissanite is incredibly rare, so moissanite available today is laboratory-created. After many years of trial and error, the particles Moissan discovered were successfully synthesized to produce what is now one of the world’s most scintillating gemstones.

Moissanite, referred to as a diamond simulant, is engineered to give the illusion of similarity to diamonds, but is compositionally and visually quite different from a real diamond. The durability, brilliance, and color of the two gems are quite distinct. One common property of both diamonds and moissanites is that they are both very good thermal conductors.

Stone Carat Size Chart

This chart illustrates how stones of different carat weights and shapes will appear when viewed from the top down.

Note: It is normal phenomenon that the size and carat of each stone may have certain deviation. Thanks for your understanding!

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