Jul 28, 2026

Lab Grown vs Natural Diamonds: An Honest Guide for Australian Buyers

If you have started shopping for an engagement ring, you have probably run into the same question everyone does: are lab grown diamonds the real thing, or are they a compromise? It is a fair question, and the honest answer surprises a lot of people. Here is the straight version, without the sales spin.

They are real diamonds, not imitations

This is the part worth getting clear first. A lab grown diamond is a real diamond. It is the same material as a mined one, pure crystalline carbon, with the same hardness, the same brilliance and the same fire. Put a lab grown and a natural diamond of the same quality side by side and no one can tell them apart by eye. Not you, not your partner, not a jeweller across the counter.

That makes lab grown diamonds completely different from simulants like cubic zirconia or moissanite. Those are stand-ins that mimic the look of a diamond but are made of other materials. A lab grown diamond is not mimicking anything. It is a diamond, grown in a lab instead of pulled out of the ground.

How they are actually made

Natural diamonds form over billions of years under heat and pressure deep in the earth. Lab grown diamonds recreate those same conditions, just faster and above ground. There are two main methods. One uses high pressure and high temperature to press carbon into a crystal. The other builds the diamond up layer by layer from a carbon rich gas. Either way, the result is a genuine diamond crystal that took weeks to grow rather than an age of the planet.

The price difference is the big one

Here is where most people make their decision. For the same size, cut, colour and clarity, a lab grown diamond usually costs a good deal less than a mined one. That gap is the reason lab grown has taken off. It means you can choose a larger stone, a higher grade, or simply a beautiful ring that leaves money in the bank for the wedding or the house deposit.

Put plainly, the same budget buys you noticeably more sparkle. A couple who might have stretched to a one carat mined diamond can often step up to a larger centre stone, or add a halo and pavé detailing, for the same spend.

Quality is graded exactly the same way

Do not assume lower price means lower standards. Lab grown diamonds are graded by the same independent labs, on the same four factors, as natural stones. At Eluri our lab grown diamonds are IGI certified, which means an independent lab has assessed the cut, colour, clarity and carat weight and put it in writing. You are buying to a documented standard, not a promise.

The ethical and environmental side

For a lot of buyers this matters as much as the price. Because a lab grown diamond is not mined, it sidesteps the questions people have about sourcing and land disruption. It is not a perfectly simple picture, growing diamonds uses energy, but for many the appeal is knowing exactly where their stone came from. If that peace of mind is part of what you are after, lab grown makes it easy.

What about resale value

This is the one honest caution, and it applies to diamonds in general. Diamonds, mined or grown, are not an investment. Both lose value the moment you buy, the same way a new car does. Lab grown stones tend to hold less resale value again. So the sensible way to think about it is simple: buy the ring because you love it and want to wear it, not because you expect to sell it later. On that measure, lab grown gives you far more ring for your money.

So which should you choose

There is no wrong answer here, only what fits you. If tradition and the story of a stone formed over billions of years means everything to you, a natural diamond has a romance all its own. But if you want the same look, the same certified quality and a great deal more size for your budget, lab grown is a genuinely brilliant choice, and increasingly the one Australian couples are making.

If you are ready to see what that looks like in the metal, have a browse through our lab grown diamond engagement rings. Every stone is IGI certified, and we are always happy to talk you through the options, whether that is over the counter in Melbourne or online anywhere in Australia.

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