How much does a 1.00 to 1.49ct H VS1 lab grown cushion diamond cost?

As of October 2026, 1.00 to 1.49ct H VS1 lab grown cushion diamonds typically cost £257 GBP to £677 GBP, with a median price of £473 GBP. There are currently 108 diamonds matching this specification available across retailers.

Where can I find the best price on a H VS1 cushion diamond?

About 16% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H VS1 Lab Grown Cushion

Quick answer

As of October 2026, there are 108 lab grown cushion diamonds with H colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £257 GBP to £677 GBP, with a median of £473 GBP. At least 37 retailers stock this exact specification, and 16% of the stones appear at more than one of them, with an average price spread of 67%. Half of all listings fall between £285 GBP and £540 GBP per carat. The same specification in natural form lists at a median of about £2,284 GBP per carat. Over the last 30 days the median price moved +4.5% and the number of listings moved -1.8%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Cushion lab grown stones in the index: 516 USD per carat, +6.9% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

108

Lowest Price

£114 GBP

Highest Price

£1,708 GBP

Average Price

£483 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

16.2%

Price Spread

67.0%

30-Day Price Trend

+4.5%

30-Day Supply Change

-1.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$506/ct

10th Percentile

$284

Median

$506

90th Percentile

$920

Score Distribution

443 diamonds scored across 4 quality tiers

Excellent

52 (11.7%)

Very Good

56 (12.6%)

Good

98 (22.1%)

Average

237 (53.5%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1