Why Lab-Grown

Lab-grown diamonds are real diamonds. They are not simulants like moissanite or cubic zirconia: they are pure carbon, crystallised in the same cubic structure as a diamond formed underground. The only difference is where they were grown.

The same diamond, grown differently

  • Identical to mined. Same carbon crystal, same hardness (10 on the Mohs scale), same fire and brilliance. Even trained gemmologists need specialist equipment to tell them apart.
  • Graded the same way. Lab-grown diamonds are graded on the same 4Cs (cut, colour, clarity and carat) by independent laboratories.
  • Kinder on the budget. A lab-grown diamond typically costs far less than a mined stone of the same size and quality, so you can choose a larger or better-graded stone for the same spend.

How they're made

Lab-grown diamonds are made by one of two methods. CVD (chemical vapour deposition) builds a diamond layer by layer from a carbon-rich gas. HPHT (high pressure, high temperature) recreates the conditions deep in the earth. Both produce genuine diamond.

Every stone independently graded

Every centre stone we set ships with a grading report from diamond certifiers IGI, so you know exactly what you're buying.

Read the diamond guide →