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 $2,232 AUD to $6,409 AUD, with a median price of $3,723 AUD. There are currently 4,089 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct H SI2 Natural Oval

Quick answer

As of September 2026, there are 4,089 natural oval diamonds with H colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,232 AUD to $6,409 AUD, with a median of $3,723 AUD. At least 52 retailers stock this exact specification. Half of all listings fall between $2,777 AUD and $4,201 AUD per carat. The same specification in lab grown form lists at a median of about $3,950 AUD 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

4,089

Lowest Price

$1,189 AUD

Highest Price

$16,037 AUD

Average Price

$4,084 AUD

Market Intelligence

Retailers Selling

Price Spread

41.1%

Price Range

Price per carat distribution across retailers

$2,250/ct

10th Percentile

$1,438

Median

$2,250

90th Percentile

$3,337

Score Distribution

4.1K diamonds scored across 4 quality tiers

Excellent

546 (13.4%)

Very Good

1,259 (30.8%)

Good

1,235 (30.2%)

Average

1,049 (25.7%)

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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

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Lab-Grown H SI2Same specifications, lab-grown origin

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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