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

As of October 2026, 0.50 to 0.74ct J SI2 natural oval diamonds typically cost £335 GBP to £955 GBP, with a median price of £556 GBP. There are currently 140 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 51%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J SI2 Natural Oval

Quick answer

As of October 2026, there are 140 natural oval diamonds with J colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £335 GBP to £955 GBP, with a median of £556 GBP. At least 47 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 51%. Half of all listings fall between £688 GBP and £1,113 GBP per carat. Over the last 30 days the median price moved -2.5% and the number of listings moved +9.3%.

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

140

Lowest Price

£197 GBP

Highest Price

£1,746 GBP

Average Price

£606 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

30.6%

Price Spread

50.6%

30-Day Price Trend

-2.5%

30-Day Supply Change

+9.3%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,120/ct

10th Percentile

$765

Median

$1,120

90th Percentile

$2,128

Score Distribution

452 diamonds scored across 4 quality tiers

Excellent

30 (6.6%)

Very Good

109 (24.1%)

Good

95 (21.0%)

Average

218 (48.2%)

Find Your Diamond

Search 140 J SI2 oval diamonds and compare prices.

Search Diamonds

Consider Instead

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

J I1I1 inclusions are not visible without magnification

Save 5%

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