How much does a 0.50 to 0.74ct J SI1 natural marquise diamond cost?

As of November 2026, 0.50 to 0.74ct J SI1 natural marquise diamonds typically cost HK$3,844 HKD to HK$9,729 HKD, with a median price of HK$5,993 HKD. There are currently 157 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 42%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J SI1 Natural Marquise

Quick answer

As of November 2026, there are 157 natural marquise diamonds with J colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run HK$3,844 HKD to HK$9,729 HKD, with a median of HK$5,993 HKD. At least 56 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 42%. Half of all listings fall between HK$8,538 HKD and HK$12,889 HKD per carat. Over the last 30 days the median price moved +0.5% and the number of listings moved +7.0%.

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 100 retailers and refresh daily. The index is a monthly release.

Last updated: November 2026

Available

157

Lowest Price

HK$2,024 HKD

Highest Price

HK$18,708 HKD

Average Price

HK$6,427 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

35.5%

Price Spread

42.1%

30-Day Price Trend

+0.5%

30-Day Supply Change

+7.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,316/ct

10th Percentile

$911

Median

$1,316

90th Percentile

$2,170

Score Distribution

431 diamonds scored across 4 quality tiers

Excellent

55 (12.8%)

Very Good

96 (22.3%)

Good

100 (23.2%)

Average

180 (41.8%)

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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