How much does a 0.75 to 0.99ct I VS1 lab grown cushion diamond cost?

As of October 2026, 0.75 to 0.99ct I VS1 lab grown cushion diamonds typically cost €183 EUR to €808 EUR, with a median price of €300 EUR. There are currently 10 diamonds matching this specification available across retailers.

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

About 25% of these diamonds are available at multiple retailers, with an average price spread of 98%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I VS1 Lab Grown Cushion

Quick answer

As of October 2026, there are 10 lab grown cushion diamonds with I colour and VS1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €183 EUR to €808 EUR, with a median of €300 EUR. At least 26 retailers stock this exact specification, and 25% of the stones appear at more than one of them, with an average price spread of 98%. Half of all listings fall between €340 EUR and €791 EUR per carat. The same specification in natural form lists at a median of about €1,615 EUR per carat. Over the last 30 days the median price moved +2.5% and the number of listings moved -4.9%.

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

Lowest Price

€160 EUR

Highest Price

€1,257 EUR

Average Price

€446 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

24.7%

Price Spread

98.2%

30-Day Price Trend

+2.5%

30-Day Supply Change

-4.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$513/ct

10th Percentile

$312

Median

$513

90th Percentile

$1,255

Score Distribution

21 diamonds scored across 4 quality tiers

Excellent

3 (14.3%)

Very Good

6 (28.6%)

Good

4 (19.0%)

Average

8 (38.1%)

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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