CVD diamonds are real diamonds, possessing the same physical, chemical, and optical properties as natural diamonds. They are grown in a laboratory using a process called Chemical Vapor Deposition (CVD) and are not synthetic or artificial in the traditional sense. The United States' Federal Trade Commission (FTC) ruled in 2018 that synthetic diamonds, including CVD diamonds, are considered real diamonds.
Physical, Chemical, and Optical Properties: CVD diamonds exhibit the same properties as natural diamonds. They are composed entirely of carbon and have the same crystal structure, hardness, and refractive index. This means they look, feel, and perform the same as natural diamonds in terms of their interaction with light and their durability.
Production 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, causing the gases to break apart and carbon atoms to precipitate and crystallize on the diamond seed, growing a new diamond layer by layer.
Regulatory Recognition: The FTC's ruling in 2018 acknowledged that CVD diamonds are real diamonds, stating that they should not be considered less authentic than natural diamonds. This decision was based on the fact that CVD diamonds have the same chemical composition and physical properties as natural diamonds, making them indistinguishable without specialized equipment.
Comparison to Other Materials: CVD diamonds are not the same as Cubic Zirconia (CZ). CZ is a synthetic crystalline substance used as a diamond simulant and does not contain carbon, unlike CVD diamonds. CVD diamonds are harder and more durable than CZ, aligning with the characteristics of natural diamonds.
Conclusion: CVD diamonds are indeed real diamonds, indistinguishable from natural diamonds by most jewellers and consumers. They offer an ethical and often more affordable alternative to mined diamonds, without compromising on quality or appearance. The FTC's recognition of CVD diamonds as real diamonds reinforces their legitimacy in the market.
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