How much does a 1.50 to 1.99ct J I1 natural marquise diamond cost?

As of November 2026, 1.50 to 1.99ct J I1 natural marquise diamonds typically cost HK$30,865 HKD to HK$152,901 HKD, with a median price of HK$96,664 HKD. There are currently 11 diamonds matching this specification available across retailers.

Where can I find the best price on a J I1 marquise diamond?

About 5% of these diamonds are available at multiple retailers, with an average price spread of 76%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J I1 Natural Marquise

Quick answer

As of November 2026, there are 11 natural marquise diamonds with J colour and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$30,865 HKD to HK$152,901 HKD, with a median of HK$96,664 HKD. At least 23 retailers stock this exact specification, and 5% of the stones appear at more than one of them, with an average price spread of 76%. Half of all listings fall between HK$26,491 HKD and HK$64,931 HKD per carat. Over the last 30 days the median price moved -1.9% and the number of listings moved +5.0%.

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

Lowest Price

HK$16,072 HKD

Highest Price

HK$224,406 HKD

Average Price

HK$98,346 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

5.2%

Price Spread

75.5%

30-Day Price Trend

-1.9%

30-Day Supply Change

+5.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$6,485/ct

10th Percentile

$1,930

Median

$6,485

90th Percentile

$9,742

Score Distribution

136 diamonds scored across 4 quality tiers

Excellent

2 (1.5%)

Very Good

11 (8.1%)

Good

5 (3.7%)

Average

118 (86.8%)

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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