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The diamond labs guide
Real diamonds created in a controlled environment using advanced technology. They share the same chemical composition, crystal structure, optical properties, and physical properties as natural diamonds—their origin is what makes them different.
Real diamond
Different origin
Grown with technology instead of formed beneath the earth.
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There is a lot of confusion around lab-grown diamonds. Select a statement to see what is true, what is not, and what actually matters.
Lab-grown diamonds are made of crystallized carbon and have the same chemical composition, crystal structure, optical properties, and physical properties as natural diamonds—their origin is what makes them different.
Lab-grown diamonds and natural diamonds appear the same to the eye. Specialized equipment must be used to determine their origin. A diamond’s certification will also identify and classify it.
Lab-grown diamonds rank 10 on the Mohs hardness scale and are suitable for fine jewelry. Following general diamond care instructions will help keep your diamond shining forever.
Lab-grown diamonds vary in cut, color, clarity, and carat weight. Their internal characteristics and overall appearance can differ, which is why thoughtful selection and independent grading matter.
The 4Cs describe the qualities that shape a diamond's appearance and size. An independent report can also document that the diamond is laboratory-grown and provide information about its assessed characteristics.
How diamonds are grown
Explore the two primary methods used to create gem-quality laboratory-grown diamonds.
High pressure, high temperature
HPHT places a diamond seed and a carbon source inside a specialized press. Extreme pressure and high temperature allow carbon to crystallize onto the seed, forming a new diamond crystal that can later be cut and polished.
Chemical vapor deposition
CVD places diamond seed plates in a chamber containing carbon-rich gas. Energy breaks down the gas, allowing carbon atoms to settle onto the seeds and crystallize in layers before the diamond is cut and polished.
