How much does a 0.50 to 0.74ct H SI2 natural oval diamond cost?

As of October 2026, 0.50 to 0.74ct H SI2 natural oval diamonds typically cost £338 GBP to £1,111 GBP, with a median price of £566 GBP. There are currently 567 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI2 oval diamond?

About 27% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct H SI2 Natural Oval

Quick answer

As of October 2026, there are 567 natural oval diamonds with H colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £338 GBP to £1,111 GBP, with a median of £566 GBP. At least 53 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between £754 GBP and £1,184 GBP per carat. The same specification in lab grown form lists at a median of about £548 GBP per carat. Over the last 30 days the median price moved -1.6% and the number of listings moved +6.4%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

567

Lowest Price

£196 GBP

Highest Price

£1,969 GBP

Average Price

£651 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

27.5%

Price Spread

47.0%

30-Day Price Trend

-1.6%

30-Day Supply Change

+6.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,220/ct

10th Percentile

$854

Median

$1,220

90th Percentile

$2,247

Score Distribution

1.4K diamonds scored across 4 quality tiers

Excellent

102 (7.1%)

Very Good

465 (32.4%)

Good

355 (24.8%)

Average

512 (35.7%)

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Consider Instead

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

Lab-Grown H SI2Same specifications, lab-grown origin

Save 40%

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