Lab-Grown Diamond Engagement Rings Australia

A ring for the question, and for everything that follows. Discover Oscar & Co engagement rings designed in Melbourne, from a simple round solitaire to a halo with diamond-set shoulders or a heart-shaped centre. Find the outline you love, then explore the metal and size options available for that design.

Discover lab-grown diamond engagement rings

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Find the style that feels like you

A classic round solitaire

For a clean outline, start with a round diamond and a simple band. Our classic 1ct round solitaire has an open claw setting that keeps the centre stone in focus. Explore its available metal colours and specifications on the product page.

A platinum solitaire with presence

The PT950 platinum round solitaire pairs a 2.05ct lab-grown centre diamond with a six-prong silhouette. Its listing includes the diamond measurements and individual report details, so you can look beyond the carat figure when deciding whether it suits you.

A halo with a softly squared outline

Our cushion halo diamond ring frames a round 0.60ct centre within a cushion-shaped halo. Diamond detailing continues along the shoulders. This is a useful place to start if you like a more detailed outline around a round centre stone.

A heart-shaped centre

For a romantic shape, explore the 1ct heart diamond solitaire. Three claws hold the centre stone above a smooth band, with one claw protecting its pointed tip. Check the available metals and ring sizes before selecting your configuration.

Choose your metal and fit

The made-to-order designs featured here offer a choice of metals, with available gold purities, platinum or sterling silver options shown on their product pages. Availability varies by ring. Select your preferred metal, colour and size to see the price for that configuration.

Use our Australian ring size guide to start checking your fit. If you are planning a surprise or choosing a ring to wear alongside a wedding band, ask us about your shortlist before ordering.

Why choose a lab-grown diamond engagement ring?

If you prefer a laboratory-grown stone, this collection brings that choice into classic and more expressive ring designs. Compare the complete ring and the details of its centre stone. Our lab-grown versus natural diamond comparison explains the differences in origin and the questions to ask.

Planning for your proposal

In-stock rings and made-to-order configurations have different timing. Some featured designs list an estimated delivery of 2–3 weeks, but use the individual product’s current estimate and confirm any fixed date with us before paying. Read our shipping information for Australian delivery details.

Engagement ring questions

Can I change the metal shown in the photograph?

Where the product offers metal options, choose your preference in the selector. Photographs may show a particular configuration; check the selected option and specification before ordering.

Are the diamonds certified?

Certification is specific to the piece and stone. Each product provides its available details, including the report laboratory and stones covered where confirmed. Accent stones are not individually certified unless the listing says so.

Where can I get help comparing rings?

Our step-by-step buying guide covers settings, centre and total weight, reports and sizing. For advice about the collection, contact Oscar & Co with the rings you like and your proposal date.