THE NETCARAT EDUCATION SERIES
Discover what laboratory-grown means, how origin is identified and what to review before choosing a stone.
Explore the guide
THE ESSENTIAL IDEA
Laboratory-grown diamonds are diamonds. Moissanite and cubic zirconia are different materials.
UNDERSTAND THE DETAILS
Laboratory-grown diamonds share diamond’s essential chemical composition and crystal structure. Their growth takes place in controlled technological conditions rather than through geological processes.
Specialized laboratory testing can identify growth origin. Appearance alone is not a reliable way to distinguish natural from laboratory-grown diamonds.
UNDERSTAND THE DETAILS
The principal methods are high pressure, high temperature (HPHT) and chemical vapor deposition (CVD). Both create diamond, with growth features that gemological laboratories can study.
A laboratory-grown origin does not make every stone the same. Compare the actual appearance, dimensions and quality assessment.
UNDERSTAND THE DETAILS
Confirm the issuing laboratory, report number and stated origin. Use the laboratory’s own verification service and check the document’s date and service type.
GIA’s revised D-to-Z laboratory-grown service, introduced in October 2025, uses overall Premium or Standard assessments. Other laboratories and older reports can use different descriptions.
A LITTLE MORE CLARITY
No. A laboratory-grown diamond is diamond. A simulant resembles diamond while having a different composition or properties.
YOUR NEXT STEP
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