Lab-Grown Diamond Rings in Australia: 2026 Guide – Una Diamond

Q: Are lab-grown diamond engagement rings popular in Australia?

Yes. Lab-grown diamond engagement rings have grown rapidly in popularity across Australia. Australian couples are increasingly choosing lab-grown diamonds for their ethical sourcing, environmental benefits, and the ability to buy a larger, better-quality diamond for the same price as a mined alternative.

Q: How much cheaper are lab-grown diamonds in Australia?

Lab-grown diamonds in Australia typically cost 50 to 80 percent less than equivalent mined diamonds. A 1-carat lab-grown diamond of excellent quality may cost between AUD 800 and AUD 2,000, compared to AUD 5,000 to AUD 15,000 or more for a comparable mined stone.

Q: Do Australian jewellers certify lab-grown diamonds?

Yes. Reputable Australian jewellers supply lab-grown diamonds certified by independent laboratories such as IGI (International Gemological Institute) or GIA (Gemological Institute of America). These certificates confirm the stone's carat, cut, colour, and clarity grades.

Q: Are lab-grown diamond rings a good investment in Australia?

Lab-grown diamonds should be purchased for their beauty and meaning rather than as a financial investment. Like mined diamonds, they are not guaranteed to appreciate in value. However, they allow you to get a significantly larger or better-quality diamond for your budget, which many couples prioritise.

Lab-grown diamond engagement rings have become one of the fastest-growing jewellery categories in Australia. They're chemically identical to mined diamonds, cost 50–80% less, and come with full IGI certification. Here's everything you need to know before you buy.

What is a lab-grown diamond?

A lab-grown diamond is a real diamond — not a simulant. It's grown in a laboratory using High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) technology, replicating the conditions under which diamonds form in the earth. The result is a stone with identical hardness, crystal structure, and brilliance to a mined diamond.

How much do they cost in Australia?

Lab-grown diamonds typically cost 50–80% less than equivalent mined stones. A 1.5ct oval-cut lab-grown diamond ring in 18K gold typically sits around AUD $4,000–$7,000 — compared to AUD $15,000–$25,000 for the mined equivalent. At Una Diamond, all rings are handcrafted to order and priced transparently.

Are they certified?

Yes. Every reputable lab-grown diamond in Australia should carry an IGI (International Gemological Institute) certificate, graded on the same 4C standards as mined diamonds. At Una Diamond, every ring ships with its IGI certificate.

How long does it take?

At Una Diamond, all rings are made to order with a six-week lead time in solid 18K gold or platinum. Factor this into your proposal planning — order early if you have a specific date in mind.

What styles are available?

From clean solitaire settings to vintage-inspired designs, toi et moi rings, and emerald-cut statement pieces — Una Diamond offers the full range. The most popular cuts in Australia right now are oval, emerald, and radiant.

Browse the full collection or start designing your own ring.