How much does a 0.75 to 0.99ct E SI2 natural radiant diamond cost?

As of October 2026, 0.75 to 0.99ct E SI2 natural radiant diamonds typically cost £855 GBP to £2,007 GBP, with a median price of £1,464 GBP. There are currently 45 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 radiant diamond?

About 20% of these diamonds are available at multiple retailers, with an average price spread of 59%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct E SI2 Natural Radiant

Quick answer

As of October 2026, there are 45 natural radiant diamonds with E colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run £855 GBP to £2,007 GBP, with a median of £1,464 GBP. At least 51 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 59%. Half of all listings fall between £1,128 GBP and £2,112 GBP per carat. The same specification in lab grown form lists at a median of about £316 GBP per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved +13.8%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

Lowest Price

£486 GBP

Highest Price

£4,450 GBP

Average Price

£1,509 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

20.2%

Price Spread

59.4%

30-Day Price Trend

-1.0%

30-Day Supply Change

+13.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,207/ct

10th Percentile

$1,255

Median

$2,207

90th Percentile

$3,456

Score Distribution

188 diamonds scored across 4 quality tiers

Excellent

17 (9.0%)

Very Good

37 (19.7%)

Good

26 (13.8%)

Average

108 (57.4%)

Find Your Diamond

Search 45 E SI2 radiant diamonds and compare prices.

Search Diamonds

Consider Instead

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

F SI2F colour is visually identical to E to the naked eye

Save 13%

Lab-Grown E SI2Same specifications, lab-grown origin

Save 81%

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