How Much Do Lab Grown Diamonds Cost in Australia? (2025 Price Guide)

Lab grown diamonds have transformed the jewellery market — offering the same fire, brilliance, and certification as mined diamonds at a fraction of the cost. But how much should you actually expect to pay? This guide breaks down lab grown diamond prices in Australia so you can shop with confidence.

Lab Grown Diamond Prices: The Key Factors

Like all diamonds, lab grown diamond prices are determined by the 4Cs: carat weight, cut, colour, and clarity. Here's a general guide to current Australian retail pricing:

0.50 carat: From approximately AUD $500–$900 (vs $1,500–$3,000 for a comparable natural diamond)

1.00 carat: From approximately AUD $900–$2,000 (vs $5,000–$12,000 for natural)

1.50 carat: From approximately AUD $2,500–$5,000 (vs $10,000–$25,000 for natural)

2.00 carat: From approximately AUD $3,500–$8,000 (vs $20,000–$50,000 for natural)

Note: Prices vary significantly based on cut quality, colour grade (D–Z), and clarity grade (FL–I3). All Diamond Lab Australia stones come with GIA or IGI certification.

Why Are Lab Grown Diamonds Cheaper?

The cost difference isn't about quality — it's about supply chain. Natural diamonds require billions of years to form and extensive global mining and distribution networks. Lab grown diamonds can be produced in weeks and don't carry the same overheads, which is why the price savings are passed directly to consumers.

Does Cheaper Mean Lower Quality?

No. A lab grown diamond graded D/VS1/Excellent cut is identical in quality to a natural diamond with the same grades — the certification confirms this. You're getting the same physical gem; the price difference reflects origin, not quality.

Getting the Best Value

To maximise value when buying a lab grown diamond in Australia:

• Prioritise cut quality above all other factors — cut determines how brilliant the diamond appears
• Choose colour grades G–H for near-colourless appearance at lower cost
• Choose clarity grades VS2–SI1 — inclusions at these grades are invisible to the naked eye
• Buy certified — always insist on GIA or IGI certification

Shop Certified Lab Grown Diamonds in Australia

Diamond Lab Australia offers a transparent, certified range of lab grown diamond jewellery and loose stones. Browse our collection online or visit our Adelaide showroom to see the diamonds in person.