How much does a 3.00 to 4.99ct H SI2 natural oval diamond cost?

As of September 2026, 3.00 to 4.99ct H SI2 natural oval diamonds typically cost $21,393 AUD to $80,109 AUD, with a median price of $39,801 AUD. There are currently 724 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct H SI2 Natural Oval

Quick answer

As of September 2026, there are 724 natural oval diamonds with H colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $21,393 AUD to $80,109 AUD, with a median of $39,801 AUD. At least 48 retailers stock this exact specification. Half of all listings fall between $9,455 AUD and $17,026 AUD per carat. The same specification in lab grown form lists at a median of about $21,744 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

724

Lowest Price

$14,848 AUD

Highest Price

$217,637 AUD

Average Price

$45,648 AUD

Market Intelligence

Retailers Selling

Price Spread

55.1%

Price Range

Price per carat distribution across retailers

$8,935/ct

10th Percentile

$4,874

Median

$8,935

90th Percentile

$12,687

Score Distribution

724 diamonds scored across 4 quality tiers

Excellent

83 (11.5%)

Very Good

279 (38.5%)

Good

195 (26.9%)

Average

167 (23.1%)

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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