A 1-carat lab-grown engagement ring now costs about S$1,800 to S$3,300 in Singapore, while a natural 1ct GIA diamond in a simple setting starts around S$4,100. We read every price off the jewellers' own sites on 27 September 2026, including two sales that end in the first week of October.
A 1-carat engagement ring in Singapore can cost S$1,800 or S$36,000, and the difference is mostly the stone, not the shop.
> Quick view: best overall is Michael Trio (settings from S$733, 20% off to 1 Oct); a lab-grown 1ct runs S$1,800-S$3,300, a natural 1ct GIA from about S$4,100. Ask which one you are being quoted before comparing.
How we picked and priced these
We read every price on 27 September 2026 from the jewellers' own sites: Michael Trio's setting and loose-diamond search, Rio's diamond feed and casing list, and the product data behind Love & Co, Goldheart, SK Jewellery and Poh Heng's web stores. Lee Hwa's own store is showing an upgrade page, so its prices come from its event RSVP page and its official Lazada store. JannPaul publishes no prices. Two well-known names are missing on purpose: Larry Jewelry's site returned an error on every page when we checked, and Shiels now trades only in Australia.
Several of these brands share an owner. Love & Co belongs to the SK Jewellery Group; Lee Hwa and Goldheart belong to Aspial. Walking three mall shops can mean two quotes, not three.
How to choose an engagement ring
- Decide natural or lab-grown first. They look the same to the eye, but a lab-grown 1ct costs S$1,800-S$3,300 here and a natural 1ct GIA stone from about S$3,400 before the setting. Lab-grown resale and upgrade value is much lower; Michael Trio and Rio only offer upgrades on certified natural stones.
- Ask for the certificate, and which lab. GIA is the benchmark for natural stones; lab-grown stones here are mostly IGI. A price for "1ct" without colour, clarity and cut grades is not comparable.
- Colour is where money disappears. Poh Heng's D-colour 1.10ct costs S$36,330; Rio's H-colour 1.01ct costs S$3,374. Most people cannot tell G or H from D once the stone is set.
- Check what the sale covers. Michael Trio's 20% is off the setting, not the diamond. Goldheart's GH10OFF excludes marked-down rings. SK's promotions page still lists expired August codes.
- Get the after-sales terms in writing: free resizing (Michael Trio 60 days, Rio 30 days, Poh Heng charges), cleaning, and the return window.
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