Frequently asked

A real diamond, grown above ground instead of mined from it. The crystal is the same carbon with the same sparkle, and it grades on the same scales; even a trained jeweller can’t tell a grown stone from a mined one by eye or loupe. The real differences are where it comes from and what it costs, and we describe it as lab-grown everywhere, always.

Pieces set with a single stone of half a carat or more ship with an IGI certificate for that stone: the Solitaire Chain Bracelet, both solitaire rings, and the Solitaire Pendant. Pavé and halo pieces use smaller melee stones, which laboratories do not certify individually.

A shorter journey. A grown diamond goes from facility to cutter to setter to you, without mining operations or a long chain of intermediaries. The saving reflects the supply chain, not the quality of the stone.

Forever. Diamond is the hardest known material, Mohs 10, whether grown or mined. It will not cloud, fade or soften, and it can be re-set, passed down and loved for generations.

Every piece ships in about 2–3 weeks, fully insured with signature on receipt. You’ll receive tracking the moment it leaves the workshop.

Nothing within Singapore: courier delivery is free and fully insured. International delivery is available on request; write to us before ordering and we’ll quote it plainly.

Always. Every piece arrives gift-ready, and no prices appear anywhere in the box. If it’s a gift, tell us in your order note and we can time the delivery to the day.

We don’t offer change-of-mind returns at this time. If your piece arrives damaged or faulty, write to us and we’ll make it right.

Not at this time; pieces can’t come back into stock. If you’re torn between ring sizes, bracelet lengths, or stud carat weights, write to us before ordering and we’ll help you choose.

Warm water, a drop of gentle dish soap, and a soft brush, once a month or whenever the sparkle dims. Avoid harsh chemicals, ultrasonic cleaners at home, and swimming pools.

Jewellery should go on last. Perfume, hairspray, and lotion first. Take pieces off for the gym, gardening, and sleep (the bracelet especially), and store them in their box when resting.

Every piece is cast in 925 sterling silver: a precious metal with a bright, white shine. Store your pieces in their box when they’re resting and clean them gently now and then, and the finish will stay bright for years.

Write to us. Lumis pieces are meant to be worn for decades, and we stand behind them. We’ll help you arrange cleaning, repair, or a new clasp or back when life happens.