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A Guide to Lab Grown Diamonds
Lab grown diamonds are real diamonds created in controlled laboratory environments rather than formed underground. They have the same chemical, physical, and optical properties as natural diamonds, meaning they look and perform identically. The key difference lies in origin, not composition. These stones are grown using advanced technology that replicates the conditions under which diamonds naturally form.
How lab grown diamonds are created
Lab grown diamonds are typically produced using one of two methods:
High Pressure High Temperature (HPHT): Replicates the intense heat and pressure found deep within the earth to form a diamond crystal.
Chemical Vapour Deposition (CVD): Grows a diamond layer by layer from carbon-rich gas in a controlled chamber.
Both methods result in genuine diamond material, not simulants or imitations.
Lab grown diamond certification
Lab grown diamonds are independently graded and certified in the same way as natural diamonds. Each stone is assessed using the 4Cs: cut, colour, clarity, and carat weight. The certification provides a detailed and transparent breakdown of the diamond’s quality, allowing for confident and informed decision-making.
What a lab grown diamond report includes
A lab grown diamond grading report will typically outline:
Grading report number: A unique identifier that corresponds to the specific stone.
4Cs: A full assessment of cut, colour, clarity, and carat weight.
Growth method: Identification of whether the diamond was created using HPHT or CVD.
Post-growth treatments: Disclosure of any treatments applied to enhance colour or clarity.
Additional grading factors: Including polish, symmetry, fluorescence, proportions, and exact measurements.
Inclusion plot: A mapped diagram of internal and external characteristics unique to the stone.
Laser inscription: Many lab grown diamonds are microscopically inscribed with their report number for identification.
Why certification matters for lab grown diamonds
Certification ensures the diamond you are purchasing has been independently verified for quality and authenticity. It also confirms that the stone is lab grown, providing full transparency around its origin. This is particularly important in a market where both natural and lab grown diamonds coexist.
Sourcing and standards
At WILLIAM ÉDOUARD, lab grown diamonds are selected for their exceptional cut, balance, and overall visual performance. Each stone is sourced from established suppliers using advanced growth technology and is chosen based on strict internal quality standards.
Where available, diamonds may feature a microscopic laser inscription that aligns with their grading report, offering an additional layer of identification and assurance under magnification.
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