How much does a 1.50 to 1.99ct J SI2 natural cushion diamond cost?

As of October 2026, 1.50 to 1.99ct J SI2 natural cushion diamonds typically cost $2,239 USD to $6,275 USD, with a median price of $3,922 USD. There are currently 236 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 cushion diamond?

About 34% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J SI2 Natural Cushion

Quick answer

As of October 2026, there are 236 natural cushion diamonds with J color and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $2,239 USD to $6,275 USD, with a median of $3,922 USD. At least 51 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between $1,938 USD and $3,082 USD per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +8.7%.

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

236

Lowest Price

$1,334 USD

Highest Price

$12,051 USD

Average Price

$4,159 USD

Market Intelligence

Retailers Selling

Cross Retailer %

34.4%

Price Spread

46.8%

30-Day Price Trend

-0.3%

30-Day Supply Change

+8.7%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,445/ct

10th Percentile

$1,547

Median

$2,445

90th Percentile

$3,836

Score Distribution

681 diamonds scored across 4 quality tiers

Excellent

93 (13.7%)

Very Good

144 (21.1%)

Good

163 (23.9%)

Average

281 (41.3%)

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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