Diamond Education

Natural Diamonds, Laboratory-Grown Diamonds & Simulants

These three descriptions are sometimes confused, but they do not mean the same thing. Understanding the difference begins with two questions: what is the material, and how did it form?

Natural diamonds

Natural diamonds form through geological processes. Their material identity is diamond, and their origin is natural. A report should be read for both the origin designation and the characteristics examined within its scope.

Laboratory-grown diamonds

Laboratory-grown diamonds are produced through manufacturing processes. They have essentially the same chemical, physical, and optical properties as natural diamonds, while their formation history is different.

The terms laboratory-grown and laboratory-created should make that origin clear. They should remain visible wherever the item is described, rather than being omitted from the main product wording.

Diamond simulants

A simulant resembles diamond but is a different material. Common examples include cubic zirconia and moissanite. A manufactured diamond simulant is not the same thing as a laboratory-grown diamond.

A person may prefer any of these materials for a particular purpose. The essential point is that the description accurately communicates what is being chosen.

Why appearance is not enough

A familiar sparkle does not establish formation history. Appropriate testing is needed to distinguish materials and origins reliably. A photograph or an informal home test should not replace the examination relevant to the question.

Ask what documentation supports the seller's material and origin description, especially when the wording is ambiguous.

Quality and origin are different discussions

Origin identifies how a diamond formed. It is not a complete description of its individual appearance or quality. Review the relevant report product and the information it provides rather than assuming origin alone answers those questions.

Read the current report terminology

Reporting systems can differ. GIA's current assessment for eligible colorless-to-near-colorless laboratory-grown diamonds uses Premium and Standard categories. IGI offers laboratory-grown diamond reports with detailed grading information. Read the named product and issue date before comparing labels.

Keep other claims separate

A material identification does not automatically prove environmental performance, working conditions, geographic manufacturing location, or future resale value. Ask for evidence specific to any additional claim that matters to you.

Clear terminology creates a better starting point for the whole purchase conversation.

Further reading: GIA: Natural and laboratory-grown diamonds | GIA: Current laboratory-grown services | IGI: Laboratory-grown reports | GIA: Diamond simulants