Frequently Asked Questions

Yes. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. They are not simulants like cubic zirconia or moissanite — they are real diamonds, certified to the same international standards.

Lab-grown diamonds let us offer real diamond jewellery with strong value, modern proportions, and clearer sourcing than traditional mined diamonds. They have the same chemical composition and crystal structure as mined diamonds, while avoiding traditional diamond mining.

Every Lune Diamond piece priced above AUD $1,000 includes an IGI certificate. The certificate details the certified diamond's key 4Cs — carat, cut, colour, and clarity. Pieces priced at AUD $1,000 or below do not include IGI certification unless stated otherwise on the product page or confirmed before purchase.

The most accurate way is to have a jeweller measure your finger. If that isn't possible, our online size guide includes a printable ring sizer and step-by-step instructions to measure at home.

Lune Diamond is an online-first studio, so we do not currently operate a public showroom. To help you decide with confidence, our product pages include detailed imagery, specifications, and order information. Eligible in-collection pieces are also covered by our 14-day change-of-mind return policy.

Lune pieces are crafted in solid precious metals such as 18K gold, platinum 950, or sterling silver 925, depending on the design. We do not use plated or filled metals unless clearly stated on the product page.

Our pieces are made in precious metals selected for fine jewellery wear, such as 18K gold, platinum 950, and sterling silver 925. If you have a known metal allergy or sensitivity, please contact us before ordering so we can confirm the suitable metal option for your piece.

Each Lune Diamond piece is made to order. In-collection designs usually take 3-4 weeks to produce, while bespoke or custom orders usually take 4-5 weeks depending on the design, stone selection, and workshop schedule.

Estimated delivery time includes both production time and shipping time. You will receive tracking details once your order has been dispatched.

We ship Australia-wide and to selected international destinations. Shipping within Australia is complimentary. International shipping is available to selected countries for a flat AUD $60, with delivery times depending on the destination, customs processing, and courier conditions.

Shipping within Australia is complimentary for all orders. International shipping is a flat AUD $60 to selected countries. All orders are sent with tracking, and higher-value orders may require signature on delivery.

Yes. We offer two paths — small modifications to existing designs (metal, stone size, finish), and fully bespoke commissions starting from a sketch or an idea. Both begin with a private consultation.

Eligible in-collection pieces can be returned within 14 days of delivery, provided they are unworn, unaltered, and in original condition with all packaging and any certificate provided.

Bespoke, custom-made, resized, engraved, altered, specially ordered pieces, loose diamonds, and earrings are not eligible for change-of-mind returns unless faulty or otherwise required by Australian Consumer Law.

For change-of-mind returns, return shipping is the customer's responsibility. If an item is confirmed to be faulty, not as described, or damaged in transit, we will cover reasonable return shipping costs in line with Australian Consumer Law.

Every piece is checked before dispatch. If something feels off when it arrives, please contact us with your order number and clear photographs.

If it is a manufacturing fault, or the item is not as described, we will assess it and arrange a suitable remedy in line with Australian Consumer Law. Depending on the issue, this may include repair, replacement, or refund.

For everyday wear, such as resizing, polishing, setting checks, or rhodium re-plating, contact us and we will confirm what is possible for your piece before any work begins. Some services may incur a fee.

We offer one complimentary resize within 6 months on eligible rings, where the design allows. Some styles, including pave, eternity, fully-set, engraved, or complex designs, may not be resizable or may incur a workshop fee.

Return shipping and any additional work required will be confirmed before the resize begins. Please contact us before sending your piece back.

Remove your jewellery before swimming, showering, exercising, sleeping, or applying lotions and perfumes. Avoid contact with chlorine, bleach, and harsh chemicals. Store each piece separately in its pouch. Clean gently with warm water, mild soap, and a soft brush.

We do not currently offer a formal trade-in or upgrade program. If you are considering a new commission, contact us and we can discuss what may be possible.