Lab-grown or natural diamond: differences, price and which to choose

A lab-grown diamond is a real diamond: it has the same composition and properties as a natural one. The difference is its origin, price and resale value.

What they are #

Both are crystallized carbon, with the same hardness (10 on the Mohs scale). A natural one formed underground over billions of years; a lab-grown one is created in weeks with HPHT or CVD processes.

Can you tell them apart? #

Not by eye or with a loupe. Only specialized instruments detect it, and many lab-grown diamonds carry a laser inscription.

Price and value #

At the same size and quality, a lab-grown diamond is significantly cheaper. A natural one holds its resale value better, although it is not a safe investment.

Certificate #

In both cases ask for a report from an independent lab (for example GIA or IGI) stating the type and the 4Cs.

How to choose #

If you prioritize size and budget, lab-grown. If you value natural origin and rarity, natural. There are other options, such as moissanite, which is a different gemstone.

See also #

• The 4Cs of diamonds: cut, color, clarity and carat
• How to choose an engagement ring and how much to spend
• Diamond
• Moissanite