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

As of September 2026, 1.00 to 1.49ct J SI2 natural cushion diamonds typically cost $1,473 CAD to $4,378 CAD, with a median price of $2,598 CAD. There are currently 608 diamonds matching this specification available across retailers.

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1.00 to 1.49ct J SI2 Natural Cushion

Quick answer

As of September 2026, there are 608 natural cushion diamonds with J color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,473 CAD to $4,378 CAD, with a median of $2,598 CAD. At least 45 retailers stock this exact specification. Half of all listings fall between $1,750 CAD and $3,344 CAD per carat. The same specification in lab grown form lists at a median of about $2,514 CAD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion natural stones in the index: 2,792 USD per carat, +1.1% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

608

Lowest Price

$1,043 CAD

Highest Price

$9,554 CAD

Average Price

$2,839 CAD

Market Intelligence

Retailers Selling

Price Spread

67.8%

Price Range

Price per carat distribution across retailers

$1,694/ct

10th Percentile

$998

Median

$1,694

90th Percentile

$2,884

Score Distribution

608 diamonds scored across 4 quality tiers

Excellent

37 (6.1%)

Very Good

121 (19.9%)

Good

200 (32.9%)

Average

250 (41.1%)

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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