Lab-Grown Diamond Jewellery Australia

Find a piece that belongs in your everyday life, or marks a moment you want to remember. Oscar & Co creates fine jewellery designed in Melbourne, with lab-grown diamonds and delivery within Australia. Start with the kind of piece you want, then compare its proportions, metal options and individual diamond details.

Choose your piece

Engagement rings and diamond rings

A solitaire keeps the focus on a centre diamond; halo and pavé designs bring smaller diamonds into the setting. Think about the shape you enjoy, how high you want the ring to sit and whether it will be worn beside a wedding band. Our engagement ring buying guide walks through those decisions. You can also browse engagement rings and check the available options on each listing.

Diamond earrings

Round studs offer a familiar, simple silhouette, while princess-cut studs, hoops and floral designs change the outline. For a pair of earrings, total diamond weight usually describes both earrings together: check the listing before comparing sizes. Read our diamond stud earrings guide for examples from the collection, or browse all earrings.

Bracelets, bangles and necklaces

A tennis bracelet creates a continuous line of diamonds; a chain bracelet with a solitaire or motif gives a different look. Fit matters as much as the design. Use our bracelet and bangle size guide before exploring bracelets. For a pendant, check where the chain will sit using the necklace length guide.

Explore lab-grown diamond jewellery

Shop the full collection

What to compare before you order

• The metal: check the selected metal, gold purity and colour. Options vary by piece; use the product selector to confirm your choice.
• The diamond details: compare the stated carat weight, measurements, colour, clarity and cut details where provided. Centre-stone weight and total diamond weight describe different things.
• The certification: read which laboratory issued the report and which stones or jewellery it covers. A jewellery report and an individual diamond grading report have different scopes; accent stones are not individually certified unless stated.
• The timing: check whether your selection is in stock, made to order or requires resizing. Contact us before ordering for a fixed proposal or gift date.

Questions about shopping with Oscar & Co

Where is Oscar & Co jewellery designed?

Our jewellery is designed in Melbourne, Australia. Read about Oscar & Co and our approach to sourcing and traceability.

Does every diamond have an individual grading report?

Certification varies by product and stone. Each listing provides the available details. If a specific report is important to you, ask our team to confirm it before you order.

Do you deliver across Australia?

We ship within Australia, with full insurance and signature on delivery. Check our shipping page for current rates and estimated timeframes, and the individual product for made-to-order timing.

Explore diamond origins and engagement rings

Read our lab-grown versus natural diamond comparison or discover lab-grown diamond engagement ring styles from the collection.