How much does a 1.00 to 1.49ct J I1 natural cushion diamond cost?

As of October 2026, 1.00 to 1.49ct J I1 natural cushion diamonds typically cost $1,217 USD to $2,706 USD, with a median price of $1,615 USD. There are currently 26 diamonds matching this specification available across retailers.

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

About 11% of these diamonds are available at multiple retailers, with an average price spread of 17%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J I1 Natural Cushion

Quick answer

As of October 2026, there are 26 natural cushion diamonds with J color and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,217 USD to $2,706 USD, with a median of $1,615 USD. At least 19 retailers stock this exact specification, and 11% of the stones appear at more than one of them, with an average price spread of 17%. Half of all listings fall between $1,212 USD and $1,429 USD per carat. Over the last 30 days the median price moved -0.2% and the number of listings moved -1.9%.

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: October 2026

Available

Lowest Price

$931 USD

Highest Price

$4,148 USD

Average Price

$1,852 USD

Market Intelligence

Retailers Selling

Cross Retailer %

10.6%

Price Spread

16.5%

30-Day Price Trend

-0.2%

30-Day Supply Change

-1.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,309/ct

10th Percentile

$1,093

Median

$1,309

90th Percentile

$1,769

Score Distribution

163 diamonds scored across 4 quality tiers

Excellent

2 (1.2%)

Very Good

12 (7.4%)

Good

9 (5.5%)

Average

140 (85.9%)

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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