What Is Happening to Natural Diamond Prices — and What Does It Mean for Buyers?

The natural diamond market has changed considerably over the past few years. Prices have adjusted, demand has shifted, and laboratory-grown diamonds have created an entirely new category alongside natural diamonds.

For someone considering buying a natural diamond, this can make the market seem more complicated. But it can also create opportunities.

A certificate is only the beginning

When I select diamonds for my clients, I never choose from the certificate alone. A grading report is important. It tells us the measurable characteristics of a diamond — its carat weight, colour, clarity and, depending on the stone, information about its proportions and finish. But it cannot tell you everything.

Two natural diamonds on white foam trays side by side

Two diamonds can look remarkably similar on paper—and still be very different in person. One may be lively and beautifully balanced. Another may appear dull, dark or simply less attractive, despite having very similar grades.

This is why I always look at the diamond itself first. How does it handle light? How is the weight distributed? Is the colour attractive? Are the inclusions visible or distracting? And, most importantly, is it beautiful?

A changing market requires better advice

When prices move, it can be tempting to focus solely on whether a diamond appears inexpensive. I think that is the wrong way to approach it.

The interesting question is not: “Is this diamond cheaper than it used to be?” It is: “Am I getting the best diamond I can for the money I want to spend?”

Hand with a small diamond held in tweezers beside a grading report

Comparing diamonds side by side often reveals the real differences.

Those are two very different things.

A lower price does not automatically make a diamond good value. Equally, a more expensive diamond is not necessarily more beautiful. Understanding where to compromise — and where not to — can make an enormous difference.

When I source diamonds, I often compare several stones side by side. I travel to Antwerp and work directly with dealers I know, because I want to see the diamonds myself. A certificate can help me decide which stones are worth looking at, but I make the final decision with the diamond in front of me.

Round diamond held in tweezers above a diamond paper at a sorting desk

Selecting diamonds in Antwerp. I always make the final decision with the diamond in front of me.

Sometimes I will recommend choosing a slightly lower colour because the diamond faces up beautifully. Sometimes an inclusion that sounds concerning on a certificate is almost impossible to see with the naked eye. And sometimes I reject a diamond with excellent specifications because I simply don't think it is beautiful enough.

This is where experience matters.

Natural diamonds are individual

One reason I still find diamonds so fascinating after more than 20 years is that no two are exactly alike.

Three antique old-cut diamonds resting on a hand

Antique diamonds remind us that beauty cannot always be reduced to a set of numbers.

This is especially true with antique and old-cut diamonds, where the personality of the individual stone often matters more than hitting a particular set of numbers on a grading report. But it applies to modern diamonds too.

Buying a diamond should never simply be an exercise in comparing specifications. You are choosing something you may wear for the rest of your life — and perhaps one day pass on to somebody else. It should make you feel something when you look at it.

Hand wearing a halo diamond ring

Ultimately, the diamond has to become something personal — something you will want to wear for a lifetime.

What does the current market mean for buyers?

Diamond advisor reviewing a grading report at a table with diamond tools and flowers

For the right buyer, I believe the present natural diamond market can be very interesting.

But I wouldn't recommend buying a diamond just because someone tells you the price is attractive. Understand what you are buying. Compare stones. Look beyond the certificate. Ask questions. Make sure the person advising you is prepared to tell you when a diamond is not worth buying.

That is an important part of how I work. My role is not to persuade a client to buy the largest or most expensive diamond possible. It is to help them understand the choices in front of them and find the diamond I genuinely believe offers the best combination of beauty, quality and value for their individual budget.

Because ultimately, I don't believe most people need a bigger diamond. They need better advice.

News from the world of diamonds

Stay updated on trends, tips, and investment opportunities -shared by Trine Lamm, certified gemologist with 20+ years of industry experience.

Im interested in….

Portrait of Trine Lamm, founder of By Lamm, inviting clients to book a free consultation about diamonds, investments, or bespoke jewellery pieces

Speak directly with trine lamm

Speak with Trine Lamm to explore diamonds, investments, or bespoke pieces — with clarity and personal care in focus.

Portrait of Trine Lamm, founder of By Lamm, inviting clients to book a free consultation about diamonds, investments, or bespoke jewellery pieces

Speak directly with trine lamm

Speak with Trine Lamm to explore diamonds, investments, or bespoke pieces — with clarity and personal care in focus.

Portrait of Trine Lamm, founder of By Lamm, inviting clients to book a free consultation about diamonds, investments, or bespoke jewellery pieces

Speak directly with trine lamm

Speak with Trine Lamm to explore diamonds, investments, or bespoke pieces — with clarity and personal care in focus.

Portrait of Trine Lamm, founder of By Lamm, inviting clients to book a free consultation about diamonds, investments, or bespoke jewellery pieces

Speak directly with trine lamm

Speak with Trine Lamm to explore diamonds, investments, or bespoke pieces — with clarity and personal care in focus.

News from the world of diamonds

Stay updated on trends, tips, and investment opportunities -shared by Trine Lamm, certified gemologist with 20+ years of industry experience.

Im interested in….

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Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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Black and white photo of hands wearing diamond rings and bracelets, reflecting By Lamm’s modern, timeless jewellery styling

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