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

As of September 2026, 3.00 to 4.99ct J SI2 natural oval diamonds typically cost HK$92,946 HKD to HK$334,860 HKD, with a median price of HK$169,670 HKD. There are currently 516 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct J SI2 Natural Oval

Quick answer

As of September 2026, there are 516 natural oval diamonds with J colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$92,946 HKD to HK$334,860 HKD, with a median of HK$169,670 HKD. At least 42 retailers stock this exact specification. Half of all listings fall between HK$37,075 HKD and HK$62,390 HKD per carat. The same specification in lab grown form lists at a median of about HK$35,188 HKD 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

516

Lowest Price

HK$56,380 HKD

Highest Price

HK$1,009,777 HKD

Average Price

HK$197,709 HKD

Market Intelligence

Retailers Selling

Price Spread

50.3%

Price Range

Price per carat distribution across retailers

$6,539/ct

10th Percentile

$3,648

Median

$6,539

90th Percentile

$9,448

Score Distribution

516 diamonds scored across 4 quality tiers

Excellent

29 (5.6%)

Very Good

189 (36.6%)

Good

137 (26.6%)

Average

161 (31.2%)

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Consider Instead

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Lab-Grown J 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