How much does a 2.00 to 2.99ct K SI1 natural marquise diamond cost?

As of November 6, 2026, 2.00 to 2.99ct K SI1 natural marquise diamonds typically cost HK$46,178 HKD to HK$117,926 HKD, with a median price of HK$79,413 HKD. There are currently 53 diamonds matching this specification available across retailers.

Where can I find the best price on a K SI1 marquise diamond?

About 43% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct K SI1 Natural Marquise

Quick answer

As of November 6, 2026, there are 53 natural marquise diamonds with K colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run HK$46,178 HKD to HK$117,926 HKD, with a median of HK$79,413 HKD. Half of all listings fall between HK$27,707 HKD and HK$44,498 HKD per carat. Over the last 30 days the median price moved -3.7% and the number of listings moved +22.8%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Marquise natural stones in the index: 2,177 USD per carat, -4.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

Lowest Price

HK$37,775 HKD

Highest Price

HK$203,443 HKD

Average Price

HK$82,039 HKD

Market Intelligence

Cross Retailer %

43.4%

Price Spread

45.5%

30-Day Price Trend

-3.7%

30-Day Supply Change

+22.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$4,699/ct

10th Percentile

$2,940

Median

$4,699

90th Percentile

$6,633

Score Distribution

53 diamonds scored across 4 quality tiers

Excellent

9 (17.0%)

Very Good

15 (28.3%)

Good

21 (39.6%)

Average

8 (15.1%)

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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