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Lab diamond

The same crystal, grown above ground

Lab-grown diamonds are real diamonds, with the same chemistry, hardness and fire as diamonds mined from the earth.

Hardness
10 on the Mohs scale
Colors
Colorless, plus fancy colors
Birthstone
April
Family
Pure carbon

Chapter one

A real diamond

A lab-grown diamond is pure carbon arranged in the same crystal structure as a mined diamond. Only special equipment can tell the two apart.

Lab-grown diamonds are real diamonds, identical in composition, brilliance and durability to mined ones. They are made by one of two methods, HPHT (high pressure, high temperature) or CVD (chemical vapor deposition), both mimicking the natural growth of diamond crystals.

Only special equipment can tell the two apart.

Chapter two

How they are grown

Lab diamonds are grown from a tiny diamond seed, either under high pressure and heat or from carbon-rich gas, in weeks rather than billions of years.

Lab diamonds offer a transparent origin and a lower environmental impact, with no mining required. Their value lets many people choose larger carat sizes and bolder designs.

Grown in weeks rather than billions of years.

Chapter three

Your choice

We offer both natural and lab-grown diamonds, so you can choose the one that suits you.

Worth knowing

  • NASA uses synthetic diamonds in technology for their strength.
  • The largest lab-grown diamond ever cut weighs over 30 carats.
  • Lab diamonds have the same hardness as mined diamonds: 10.
  • They are graded with the same four Cs.
  • Diamond is the birthstone of April.
  • Lab diamonds can be grown in fancy colors too.

How to wear it

With color
A lab diamond line frames any colored gemstone.
Stacked
Layer two widths for an easy everyday stack.
In any gold
White, yellow or rose all work.
On its own
A classic line, beautifully priced.

Explore more fascinating gemstones

The gemology journal

Need help choosing?

Ask us about sizing, custom lengths or a gift.

Contact client care