How much does a 1.00 to 1.49ct H SI2 natural oval diamond cost?

As of September 2026, 1.00 to 1.49ct H SI2 natural oval diamonds typically cost £1,086 GBP to £3,086 GBP, with a median price of £1,796 GBP. There are currently 4,081 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct H SI2 Natural Oval

Quick answer

As of September 2026, there are 4,081 natural oval diamonds with H colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,086 GBP to £3,086 GBP, with a median of £1,796 GBP. At least 52 retailers stock this exact specification. Half of all listings fall between £1,338 GBP and £2,024 GBP per carat. The same specification in lab grown form lists at a median of about £1,903 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Oval natural stones in the index: 2,380 USD per carat, -9.6% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

4,081

Lowest Price

£572 GBP

Highest Price

£7,724 GBP

Average Price

£1,970 GBP

Market Intelligence

Retailers Selling

Price Spread

41.1%

Price Range

Price per carat distribution across retailers

$2,249/ct

10th Percentile

$1,438

Median

$2,249

90th Percentile

$3,337

Score Distribution

4.1K diamonds scored across 4 quality tiers

Excellent

554 (13.6%)

Very Good

1,244 (30.5%)

Good

1,236 (30.3%)

Average

1,047 (25.7%)

Find Your Diamond

Search 4,081 H 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.

H I1I1 inclusions are not visible without magnification

Save 12%

Lab-Grown H SI2Same specifications, lab-grown origin

Save 24%

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