Lab-Grown Diamonds in Singapore: A Practical Buying Guide

Lab-grown diamonds can make a larger centre stone or a more detailed ring design possible within your budget. They are diamonds, but choosing one still involves comparing the individual stone, its report and the complete ring. For Singapore buyers, the most useful starting point is a current, itemised quotation rather than a headline discount.

Are lab-grown diamonds real diamonds?

Yes. Lab-grown diamonds have essentially the same chemical composition, crystal structure and optical properties as natural diamonds. Moissanite and cubic zirconia are different materials. A lab-grown diamond should be clearly identified as laboratory-grown on its sales documentation.

The distinction is how the diamond formed. HPHT, or High Pressure High Temperature, uses heat and pressure to grow diamond. CVD, or Chemical Vapour Deposition, grows diamond from a carbon-containing gas. Both can produce jewellery-quality stones. The growth method alone does not tell you which finished diamond will look better.

Origin cannot be established reliably from a product photograph or a casual glance. Independent laboratory testing provides information that appearance alone cannot.

How much do lab-grown diamonds cost in Singapore?

Lab-grown diamonds generally sell for less than comparable natural diamonds. The actual difference depends on the stones and the retailer. A fixed percentage or a one-carat price range quickly becomes misleading when it leaves out shape, cut quality, measurements, report type or the setting.

Ask for a written quotation showing:

• The centre diamond, with its report number and specifications.
• The setting, including metal, design and any accent stones.
• The total payable in Singapore dollars, with GST treatment and any additional charges clearly stated.
• What resizing, servicing, delivery and return terms apply to that particular order.

Compare loose-diamond prices with loose-diamond prices, and completed-ring prices with completed-ring prices. If one quote is much lower, first check that you are comparing the same scope of work.

GIA and IGI reports: check the format

Laboratory reports are useful, but they do not all present lab-grown diamond quality in the same way.

GIA: Since 1 October 2025, GIA's service for D-to-Z laboratory-grown diamonds has used an overall Premium or Standard quality assessment. It replaced the previous natural-diamond grading terminology for that service. Older GIA lab-grown reports may use the earlier format, so check the document's date and type.

IGI: Its laboratory-grown diamond reports continue to document the 4Cs. Read the actual report and comments for growth-process or treatment information rather than assuming every document includes identical details.

Verify the report through the issuing laboratory's website. Ask the jeweller to match the stone's identifying information, including any laser inscription, to the document. A report describes the diamond; it is not a guarantee of its resale price or a substitute for viewing it.

Choose the stone you will enjoy wearing

Look at light performance first

Two diamonds of the same origin and carat weight can look quite different. Compare brightness, contrast and sparkle as each stone moves. See it in ordinary indoor lighting as well as the jewellery counter's spotlights. For an oval, pear or other elongated shape, notice whether dark areas remain distracting as you tilt it.

Compare dimensions as well as carat weight

Carat measures weight. Length and width help explain the outline you will see on the hand. Try the proportions against the intended ring design: a larger centre stone also changes the height, setting and overall feel you may prefer.

Judge colour and clarity in context

A higher clarity grade does not automatically create a visible improvement at normal viewing distance. Our eye-clean diamond guide explains how to assess inclusions without relying on a grade threshold. Compare colour in the intended metal colour, and keep the whole design in view. Our diamond guide introduces the broader quality factors.

What about sustainability and sourcing?

Laboratory-grown origin alone does not establish the environmental or labour conditions behind a finished ring. Growing, cutting, polishing and setting still involve energy, materials and people.

If a seller makes a sustainability claim, ask what it covers, who checked it and whether the evidence applies to the diamond you are considering. The US FTC's guidance on diamond advertising cautions against broad, unqualified environmental claims. It is a useful reminder to seek specific evidence rather than relying on a label such as “eco-friendly”.

Will a lab-grown diamond hold its value?

Do not plan a jewellery purchase around recovering the retail price later. A future resale offer depends on the buyer, market conditions and the particular piece. Neither a grading report nor natural origin guarantees that outcome.

If a retailer offers a buyback or upgrade programme, request its written terms before purchasing. Check whether it provides cash or credit, how the amount is calculated and whether another purchase is required. Treat those terms separately from the sentimental value of the ring.

Choosing an engagement ring or bridal gift

For an engagement ring, discuss how much the recipient values natural origin, the size and design they like, and the amount you are comfortable spending. None of those preferences can be read from a laboratory report.

For a bridal jewellery gift, agree on diamond origin with the recipient and anyone contributing before commissioning. Family expectations vary. Let that conversation guide the choice rather than assuming that age or tradition determines a preference.

Explore our bespoke engagement ring designs to consider how the stone and setting work together. When you are ready to discuss your own piece, contact Diamond Ateliers with your preferred shape, budget and any quotations or reports you would like to understand.