How much does a 0.20 to 0.49ct I VVS1 natural cushion diamond cost?

As of October 2026, 0.20 to 0.49ct I VVS1 natural cushion diamonds typically cost £225 GBP to £590 GBP, with a median price of £331 GBP. There are currently 50 diamonds matching this specification available across retailers.

Where can I find the best price on a I VVS1 cushion diamond?

About 40% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I VVS1 Natural Cushion

Quick answer

As of October 2026, there are 50 natural cushion diamonds with I colour and VVS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £225 GBP to £590 GBP, with a median of £331 GBP. At least 10 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between £964 GBP and £1,397 GBP per carat. Over the last 30 days the median price moved +0.8% and the number of listings moved +8.1%.

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 natural stones in the index: 2,948 USD per carat, +1.7% 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

£147 GBP

Highest Price

£1,240 GBP

Average Price

£365 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

36.8%

30-Day Price Trend

+0.8%

30-Day Supply Change

+8.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,565/ct

10th Percentile

$1,037

Median

$1,565

90th Percentile

$2,316

Score Distribution

145 diamonds scored across 4 quality tiers

Excellent

41 (28.3%)

Very Good

33 (22.8%)

Good

53 (36.6%)

Average

18 (12.4%)

Find Your Diamond

Search 50 I VVS1 cushion diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J VVS1J colour is visually identical to I to the naked eye

Save 17%

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