How much does a 1.00 to 1.49ct J SI2 natural cushion diamond cost?

As of October 2026, 1.00 to 1.49ct J SI2 natural cushion diamonds typically cost $1,505 CAD to $4,457 CAD, with a median price of $2,780 CAD. There are currently 274 diamonds matching this specification available across retailers.

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

About 37% of these diamonds are available at multiple retailers, with an average price spread of 65%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J SI2 Natural Cushion

Quick answer

As of October 2026, there are 274 natural cushion diamonds with J color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,505 CAD to $4,457 CAD, with a median of $2,780 CAD. At least 50 retailers stock this exact specification, and 37% of the stones appear at more than one of them, with an average price spread of 65%. Half of all listings fall between $1,673 CAD and $3,234 CAD per carat. Over the last 30 days the median price moved +0.5% and the number of listings moved +7.8%.

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

274

Lowest Price

$1,013 CAD

Highest Price

$8,893 CAD

Average Price

$2,895 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

37.0%

Price Spread

65.2%

30-Day Price Trend

+0.5%

30-Day Supply Change

+7.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,714/ct

10th Percentile

$933

Median

$1,714

90th Percentile

$2,939

Score Distribution

669 diamonds scored across 4 quality tiers

Excellent

58 (8.7%)

Very Good

110 (16.4%)

Good

167 (25.0%)

Average

334 (49.9%)

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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