1.5ct G VS2 Cushion Lab-Grown Diamond Price
The median is £300. Half of these diamonds are listed between £188 and £526 at 16 retailers (measured on October 29, 2026), and the same stone is often priced very differently at each.
1.5ct G VS2 Cushion Lab-Grown Diamond Price has a median price of £300, with the middle half listed between £188 and £526, across 204 certificated stones from 16 retailers on Carat Hunter (measured on October 29, 2026).
What it actually costs
Middle half listed between £188 to £526
The same stone, priced differently
Across 117 stones of this specification carried by more than one retailer, the dearest listing sits 420% above the cheapest for the identical diamond, a typical gap of £1,017. This is not a difference in the stone. It is the same certificated diamond, and the gap is what you avoid by comparing before you buy.
What changes the price
Median price for the same specification with one attribute changed, so you can see what flexing each one is worth.
| Change | Median | Difference |
|---|---|---|
| Carat 1ct | £370 | +24% |
| Carat 2ct | £579 | +94% |
| Clarity VS1 | £256 | -15% |
| Clarity SI1 | £406 | +36% |
| Colour F | £318 | +6% |
| Colour H | £391 | +30% |
| Origin natural | £5,562 | +1757% |
Reading this specification
VS2 is the usual value sweet spot. Inclusions need 10x magnification to find and the stone is eye-clean in almost every case, so paying up for a VVS grade buys wording on the report rather than a visible change.
G is near-colourless and faces up white in most shapes and settings, which is why this part of the scale is the most common value recommendation.
The 420% spread on this specification is unusually wide, which means the retailer you choose matters more than any single grade on the report.
Stones at this specification now
Current examples carried by more than one retailer, so the price comparison is real.
- 1.59ct G VS2from £284 across 16 retailersAs of October 28, 2026
- 1.54ct G VS2from £180 across 10 retailersAs of October 28, 2026
- 1.56ct G VS2from £176 across 15 retailersAs of October 28, 2026
- 1.61ct G VS2from £181 across 13 retailersAs of October 28, 2026
- 1.65ct G VS2from £252 across 4 retailersAs of October 27, 2026
- 1.51ct G VS2from £275 across 10 retailersAs of October 27, 2026
FAQ
What is a fair price for a 1.5ct G VS2 Cushion Lab-Grown diamond?
The median is £300 and the middle half of stones are listed between £188 and £526 (measured on October 29, 2026). Those figures cover 204 certificated diamonds listed by 16 retailers, so anything materially above the upper figure is worth questioning.
How much do retailers differ on the same diamond?
Across 117 stones of this specification carried by more than one retailer, the typical gap between the cheapest and dearest listing of the identical diamond is 420%, or about £1,017.
What is the cheapest way to change this specification?
Moving to VS1 lowers the median by 15% to £256.
How many retailers carry 1.5ct G VS2 Cushion diamonds?
Carat Hunter tracks 16 retailers actively offering diamonds matching this specification, across 226 distinct certified stones.
Is Lab-Grown pricing typical for 1.5ct Cushion diamonds?
Lab-grown diamond prices have declined significantly over recent years. Current Carat Hunter data shows lab-grown pricing running materially below equivalent natural stones.
How this is measured
Measured on October 29, 2026 from 226 certificated diamonds between 1.5 and 1.69 carat, carrying 977 current listings across 16 retailers. Each stone with a recently confirmed price contributes the cheapest price we last saw for it, so the distribution reflects what a buyer comparing retailers would actually pay. These figures summarize many stones, so they carry the day they were measured rather than the date of any one listing.
Certificated stones with a current listed price only, and every price figure uses only prices we confirmed recently. Uncertificated inventory is excluded because its grades cannot be verified against a laboratory report.
Updated October 29, 2026. Aggregate data across 16 retailers.