Skip to content
Imperial Star Gems
All insights

Lab-grown diamonds

Non-diamond simulants still confuse casual buyers shopping for lab-grown

Cheaper diamond simulants like moissanite and cubic zirconia are sometimes conflated with lab-grown diamond by casual buyers, despite being chemically and optically distinct materials.

Imperial Star Gems trade desk1 min read

Cheaper diamond simulants like moissanite and cubic zirconia are sometimes conflated with lab-grown diamond by casual buyers, despite being chemically and optically distinct materials.

  • A lab-grown diamond is chemically identical carbon, graded on the same 4Cs scale as natural; a simulant is a different material entirely, priced and graded differently.
  • Confusion tends to arise from marketing language that groups all lab-created stones together loosely, without clarifying that a simulant isn't diamond at all.
  • The gap matters most at resale and insurance time, when a buyer who believed they owned lab-grown diamond discovers the piece was a simulant instead.

Every stone we describe as lab-grown diamond carries a diamond grading report, never a simulant. Check the report type on any stone before assuming what material you're buying.

Market commentary drawn from publicly available market data and trade reporting, not investment advice. Prices move; figures are indicative and correct as of the date above.