Jewellery Council of South Africa

Jewellery Council of South Africa

Natural vs Lab-Grown Diamonds

Updated 1/14/2026

What’s the difference, and which is right for you?

Today, buyers can choose between natural diamonds, mined from the earth, and lab-grown diamonds, created in advanced laboratories. Both are real diamonds with the same physical and chemical structure, but their origins, pricing, and perceptions differ.

Natural Diamonds – Billions of Years in the Making

  • Formed under intense heat and pressure deep in the earth’s crust.

  • Each stone is unique, representing geological history billions of years old.

  • Often hold higher resale value and are prized for their rarity and symbolism.

  • Carry a strong sense of tradition and heritage.

Lab-Grown Diamonds – Innovation and Accessibility

  • Produced in high-tech labs using HPHT (High Pressure High Temperature) or CVD (Chemical Vapour Deposition) methods.

  • Physically, chemically, and optically identical to mined diamonds.

  • More affordable — often 30–40% less than natural equivalents.

  • Viewed as a more sustainable option, as they avoid large-scale mining.

Comparing the Two

Feature

Natural Diamonds

Lab-Grown Diamonds

Origin

Formed in nature over billions of years

Created in a lab within weeks

Appearance

Identical to lab-grown

Identical to natural

Resale Value

Typically higher

Lower resale value currently

Price

Premium pricing

More affordable

Sustainability

Mining has environmental and social impacts

Smaller footprint, seen as eco-conscious

Perception

Viewed as rare, traditional, symbolic

Viewed as modern, ethical, and accessible

Which Should You Choose?

Both natural and lab-grown diamonds are real diamonds. The right choice depends on:

  • Budget – Lab-grown offers greater size or quality for less.

  • Values – Choose natural for rarity and heritage; lab-grown for sustainability and affordability.

  • Purpose – Engagement rings often lean toward natural; fashion and everyday jewellery may suit lab-grown.

💡 Tip: Always ask for full disclosure. JCSA-accredited jewellers are required to clearly state whether a diamond is natural or lab-grown.

Frequently Asked Questions

Are lab-grown diamonds fake?
 No. They are chemically and physically identical to natural diamonds. The only difference is origin.

Can lab-grown diamonds be certified?
 Yes. Reputable labs like GIA and IGI grade lab-grown diamonds using the same 4Cs system.

Do lab-grown diamonds hold value?
 Resale values are generally lower, but the market is evolving. Many buyers prioritise upfront savings over resale.