How much does a 1.50 to 1.99ct I IF natural cushion diamond cost?

As of November 2026, 1.50 to 1.99ct I IF natural cushion diamonds typically cost HK$29,946 HKD to HK$70,678 HKD, with a median price of HK$42,619 HKD. There are currently 36 diamonds matching this specification available across retailers.

Where can I find the best price on a I IF cushion diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I IF Natural Cushion

Quick answer

As of November 2026, there are 36 natural cushion diamonds with I colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run HK$29,946 HKD to HK$70,678 HKD, with a median of HK$42,619 HKD. At least 47 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between HK$26,109 HKD and HK$42,306 HKD per carat. Over the last 30 days the median price moved -0.1% and the number of listings moved +10.3%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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$24,910 HKD

Highest Price

HK$142,864 HKD

Average Price

HK$46,009 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

34.0%

Price Spread

49.2%

30-Day Price Trend

-0.1%

30-Day Supply Change

+10.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,192/ct

10th Percentile

$2,759

Median

$4,192

90th Percentile

$6,825

Score Distribution

92 diamonds scored across 5 quality tiers

Exceptional

1 (1.1%)

Excellent

24 (26.1%)

Very Good

21 (22.8%)

Good

34 (37.0%)

Average

12 (13.0%)

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J IFJ colour is visually identical to I to the naked eye

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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