How much does a 0.75 to 0.99ct J I1 natural cushion diamond cost?

As of October 2026, 0.75 to 0.99ct J I1 natural cushion diamonds typically cost $607 USD to $1,311 USD, with a median price of $888 USD. There are currently 19 diamonds matching this specification available across retailers.

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

About 9% of these diamonds are available at multiple retailers, with an average price spread of 25%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct J I1 Natural Cushion

Quick answer

As of October 2026, there are 19 natural cushion diamonds with J color and I1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $607 USD to $1,311 USD, with a median of $888 USD. At least 15 retailers stock this exact specification, and 9% of the stones appear at more than one of them, with an average price spread of 25%. Half of all listings fall between $872 USD and $1,127 USD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved -5.9%.

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

$476 USD

Highest Price

$1,832 USD

Average Price

$929 USD

Market Intelligence

Retailers Selling

Cross Retailer %

8.9%

Price Spread

25.5%

30-Day Price Trend

+0.1%

30-Day Supply Change

-5.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,000/ct

10th Percentile

$743

Median

$1,000

90th Percentile

$1,500

Score Distribution

90 diamonds scored across 3 quality tiers

Very Good

6 (6.7%)

Good

1 (1.1%)

Average

83 (92.2%)

Find Your Diamond

Search 19 J I1 cushion diamonds and compare prices.

Search Diamonds

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