Natural vs Lab-Grown Diamonds: What's the Difference?

Published: 2026-03-31 | Author: Benny Gabay

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Natural vs Lab-Grown Diamonds: Understanding Your Options

When shopping for a diamond, one of the first questions you'll face is whether to choose a natural or lab-grown diamond. Both are real diamonds but they differ in origin, price, and long-term value.

What Is a Natural Diamond?

Natural diamonds form deep within the earth over billions of years under extreme heat and pressure. Each natural diamond is unique and carries timeless value as both a gemstone and an investment. All natural diamonds sold by Diagem carry independent GIA or IGI certification.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are created in controlled laboratory environments replicating the natural formation process. The result is a diamond that is chemically, physically, and optically identical to a mined diamond, also certified by GIA or IGI.

Price: The Key Difference

Lab-grown diamonds typically cost 50-80% less than comparable natural diamonds. At Diagem, our factory-direct pricing means better value on both types, but lab-grown offers the most dramatic price advantage.

Rarity and Long-Term Value

Natural diamonds are finite and rare. This rarity has historically supported their long-term value. Lab-grown diamonds can be produced on demand and do not carry the same scarcity premium. For investment buyers, natural diamonds have historically held their value better.

Are Lab-Grown Diamonds Real?

Yes. Lab-grown diamonds have a hardness of 10 on the Mohs scale, the same brilliance, and are indistinguishable from natural diamonds without specialist equipment. They are real diamonds in every sense.

Which Should You Choose?

• Choose natural diamonds if you value rarity, tradition, and long-term investment potential
• Choose lab-grown diamonds if you want maximum size and quality for your budget

Both types are certified, beautiful, and available at factory-direct prices from Diagem. Browse our natural diamonds or lab-grown diamonds, or read our Diamond Buying Guide.

Want to see how natural and lab-grown diamonds compare side by side? Read our Natural vs Lab-Grown Diamonds comparison.