How much does a 5.00ct+ E SI2 natural oval diamond cost?

As of September 2026, 5.00ct+ E SI2 natural oval diamonds typically cost HK$428,581 HKD to HK$1,147,275 HKD, with a median price of HK$556,557 HKD. There are currently 29 diamonds matching this specification available across retailers.

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

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5.00ct+ E SI2 Natural Oval

Quick answer

As of September 2026, there are 29 natural oval diamonds with E colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run HK$428,581 HKD to HK$1,147,275 HKD, with a median of HK$556,557 HKD. At least 20 retailers stock this exact specification. Half of all listings fall between HK$92,749 HKD and HK$139,546 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

Lowest Price

HK$357,855 HKD

Highest Price

HK$1,498,326 HKD

Average Price

HK$652,715 HKD

Market Intelligence

Retailers Selling

Price Spread

44.2%

Price Range

Price per carat distribution across retailers

$13,486/ct

10th Percentile

$10,960

Median

$13,486

90th Percentile

$18,589

Score Distribution

29 diamonds scored across 4 quality tiers

Excellent

6 (20.7%)

Very Good

10 (34.5%)

Good

7 (24.1%)

Average

6 (20.7%)

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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