Lab-Created Diamonds: the Ultimate GuideLab-Created Diamonds: the Ultimate Guide

Diamond Specialist Certification Course

Lab-Created Diamonds: the Ultimate Guide

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By International Gem Society
engagement ring lab created diamonds
This engagement ring features a lab-created 0.9-ct round brilliant diamond center stone in a delicate 14k white gold filigree setting with milgrain edging. © CustomMade. Used with permission.
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at CustomMade

Lab-Created Diamonds are Real Diamonds

Lab-created, lab-grown, or synthetic diamonds have the same optical, physical, and chemical properties as their mined counterparts. The only significant difference between a lab-created and mined diamond is that one forms in a controlled environment in a laboratory, the other forms over time in the uncontrolled environment of the Earth. Both lab-created and natural diamonds are real diamonds.

CVD diamond crystal - lab-created diamonds
This single, freestanding, unpolished lab-created diamond crystal weighs 155 carats and measures 1.6 ± 0.25  mm thick and 92 mm across. Photo by Matthias Schreck, Stefan Gsell, Rosaria Brescia & Martin Fischer
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CVD diamond crystal - lab-created diamonds
This single, freestanding, unpolished lab-created diamond crystal weighs 155 carats and measures 1.6 ± 0.25  mm thick and 92 mm across. Photo by Matthias Schreck, Stefan Gsell, Rosaria Brescia & Martin Fischer
…
GE synthetic diamonds - lab-created diamonds
General Electric successfully synthesized diamonds in 1955. At first, these stones were very small and the process too complex and costly for these lab-created gems to compete with mined diamonds. In the decades since, methods have improved and costs have decreased. Many companies now create diamonds in labs. Green, lab-created diamonds, about 1.0 mm in size, made by General Electric in 1984. Photo by ph0rk. Licensed under CC By-SA 2.0.
CVD diamond crystal - lab-created diamonds
This single, freestanding, unpolished lab-created diamond crystal weighs 155 carats and measures 1.6 ± 0.25  mm thick and 92 mm across. Photo by Matthias Schreck, Stefan Gsell, Rosaria Brescia & Martin Fischer
…

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