Knowledge Do CVD Diamonds Pass a Diamond Tester? 5 Key Points to Know
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Tech Team · Kintek Solution

Updated 3 months ago

Do CVD Diamonds Pass a Diamond Tester? 5 Key Points to Know

CVD diamonds will pass a diamond tester because they possess the same chemical, physical, and optical properties as natural diamonds.

CVD (Chemical Vapor Deposition) diamonds are created through a process where a thin diamond seed is placed in a sealed chamber and heated to around 800°C.

Carbon-rich gas is then introduced into the chamber, ionizing and breaking down into pure carbon molecules.

These molecules attach to the original diamond seed, gradually forming a fully-grown diamond.

The result is a diamond with minimal to no impurities, categorized as type IIa.

The diamond industry has advanced to a point where synthetic diamonds, like CVD diamonds, are nearly indistinguishable from natural diamonds.

Even top gemologists cannot tell them apart without the use of specialized laboratory equipment.

CVD diamonds have the same flaws as natural diamonds, and their origin is noted on GIA or IGI certification.

Diamond testers are designed to differentiate between natural and synthetic diamonds, including CVD and HPHT (High Pressure-High Temperature) diamonds.

However, CVD diamonds will pass these tests due to their identical chemical, physical, and optical properties to natural diamonds.

The only way to definitively determine if a diamond is CVD-grown is through the use of specialized laboratory equipment, such as the DiamondView machine.

This machine can analyze the stone's spectroscopic analysis and reveal microscopic growth lines characteristic of CVD diamonds.

In summary, CVD diamonds will pass a diamond tester because they possess the same properties as natural diamonds.

The only way to differentiate between the two is through the use of specialized laboratory equipment and certification from recognized authorities like GIA and IGI.

Continue exploring, consult our experts

Do CVD Diamonds Pass a Diamond Tester? 5 Key Points to Know

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