How much does a 0.75 to 0.99ct H SI2 natural oval diamond cost?

As of October 2026, 0.75 to 0.99ct H SI2 natural oval diamonds typically cost $1,323 AUD to $4,076 AUD, with a median price of $2,096 AUD. There are currently 318 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 65%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct H SI2 Natural Oval

Quick answer

As of October 2026, there are 318 natural oval diamonds with H colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $1,323 AUD to $4,076 AUD, with a median of $2,096 AUD. At least 54 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 65%. Half of all listings fall between $1,840 AUD and $3,354 AUD per carat. The same specification in lab grown form lists at a median of about $1,212 AUD per carat. Over the last 30 days the median price moved -1.9% and the number of listings moved -3.4%.

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

318

Lowest Price

$754 AUD

Highest Price

$6,896 AUD

Average Price

$2,439 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

31.3%

Price Spread

64.9%

30-Day Price Trend

-1.9%

30-Day Supply Change

-3.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,639/ct

10th Percentile

$1,095

Median

$1,639

90th Percentile

$3,049

Score Distribution

820 diamonds scored across 4 quality tiers

Excellent

118 (14.4%)

Very Good

175 (21.3%)

Good

200 (24.4%)

Average

327 (39.9%)

Find Your Diamond

Search 318 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 6%

Lab-Grown H SI2Same specifications, lab-grown origin

Save 48%

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