How much does a 0.20 to 0.49ct I VS1 natural heart diamond cost?

As of October 2026, 0.20 to 0.49ct I VS1 natural heart diamonds typically cost £255 GBP to £456 GBP, with a median price of £346 GBP. There are currently 103 diamonds matching this specification available across retailers.

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

About 48% of these diamonds are available at multiple retailers, with an average price spread of 27%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I VS1 Natural Heart

Quick answer

As of October 2026, there are 103 natural heart diamonds with I colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £255 GBP to £456 GBP, with a median of £346 GBP. At least 12 retailers stock this exact specification, and 48% of the stones appear at more than one of them, with an average price spread of 27%. Half of all listings fall between £1,003 GBP and £1,314 GBP per carat. The same specification in lab grown form lists at a median of about £471 GBP per carat. Over the last 30 days the median price moved -11.1% and the number of listings moved +2.4%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

103

Lowest Price

£136 GBP

Highest Price

£916 GBP

Average Price

£360 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

48.3%

Price Spread

27.1%

30-Day Price Trend

-11.1%

30-Day Supply Change

+2.4%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,528/ct

10th Percentile

$1,175

Median

$1,528

90th Percentile

$1,893

Score Distribution

228 diamonds scored across 4 quality tiers

Excellent

43 (18.9%)

Very Good

66 (28.9%)

Good

38 (16.7%)

Average

81 (35.5%)

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Consider Instead

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

J VS1J colour is visually identical to I to the naked eye

Save 9%

Lab-Grown I VS1Same specifications, lab-grown origin

Save 59%

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