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

As of September 2026, 3.00 to 4.99ct H SI2 natural marquise diamonds typically cost HK$151,278 HKD to HK$417,835 HKD, with a median price of HK$246,044 HKD. There are currently 111 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct H SI2 Natural Marquise

Quick answer

As of September 2026, there are 111 natural marquise diamonds with H colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$151,278 HKD to HK$417,835 HKD, with a median of HK$246,044 HKD. At least 43 retailers stock this exact specification. Half of all listings fall between HK$67,351 HKD and HK$105,324 HKD per carat. The same specification in lab grown form lists at a median of about HK$54,433 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. Marquise natural stones in the index: 2,114 USD per carat, -8.8% 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

111

Lowest Price

HK$130,560 HKD

Highest Price

HK$820,012 HKD

Average Price

HK$269,348 HKD

Market Intelligence

Retailers Selling

Price Spread

42.0%

Price Range

Price per carat distribution across retailers

$11,523/ct

10th Percentile

$6,720

Median

$11,523

90th Percentile

$15,015

Score Distribution

111 diamonds scored across 4 quality tiers

Excellent

12 (10.8%)

Very Good

37 (33.3%)

Good

34 (30.6%)

Average

28 (25.2%)

Find Your Diamond

Search 111 H SI2 marquise diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

Lab-Grown H SI2Same specifications, lab-grown origin

Save 40%

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