CVD diamonds are real diamonds.
They have the same physical, chemical, and optical properties as natural diamonds.
These diamonds are created through a process called chemical vapor deposition (CVD).
This process grows diamonds in a laboratory setting instead of mining them from the earth.
Despite being lab-grown, CVD diamonds are not considered synthetic or artificial.
They are chemically identical to natural diamonds and cannot be distinguished from them even by trained jewelers.
1. Physical and Chemical Properties
CVD diamonds share the same physical properties and chemical composition as natural diamonds.
Both are composed entirely of carbon and exhibit the same hardness and brilliance.
The Federal Trade Commission (FTC) in the United States has recognized this similarity.
In 2018, the FTC ruled that both synthetic (lab-grown) and natural diamonds are indeed real diamonds.
2. Creation Process
CVD diamonds are created by placing a diamond seed in a sealed chamber and heating it to about 800°C.
A carbon-rich gas mixture, typically hydrogen and methane, is introduced into the chamber.
The gases are ionized into plasma using microwaves, which breaks their molecular bonds.
The freed carbon atoms then deposit onto the diamond seed, building up a diamond layer by layer.
3. Comparison with Natural Diamonds
While natural diamonds form over billions of years under high pressure and temperature deep within the Earth, CVD diamonds are grown in controlled laboratory conditions.
This process allows for the creation of diamonds that are often of higher quality and purity than many natural diamonds.
They are produced under precise conditions without the inclusion of impurities that can occur in natural diamond formation.
4. Distinction from Other Simulants
It is important to note that CVD diamonds are not the same as other diamond simulants like cubic zirconia (CZ).
Unlike CZ, which is a completely different material not containing carbon, CVD diamonds are genuine diamonds made entirely of carbon.
They possess the same hardness and durability as natural diamonds.
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