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 €3,426 EUR to €8,063 EUR, with a median price of €4,832 EUR. 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 color and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €3,426 EUR to €8,063 EUR, with a median of €4,832 EUR. At least 48 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 €2,963 EUR and €4,808 EUR per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +10.9%.

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

€2,842 EUR

Highest Price

€16,386 EUR

Average Price

€5,247 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

34.0%

Price Spread

49.1%

30-Day Price Trend

-0.4%

30-Day Supply Change

+10.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,197/ct

10th Percentile

$2,760

Median

$4,197

90th Percentile

$6,817

Score Distribution

92 diamonds scored across 5 quality tiers

Exceptional

1 (1.1%)

Excellent

23 (25.0%)

Very Good

23 (25.0%)

Good

34 (37.0%)

Average

11 (12.0%)

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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