How much does a 0.20 to 0.49ct D SI1 natural cushion diamond cost?

As of October 2026, 0.20 to 0.49ct D SI1 natural cushion diamonds typically cost $383 CAD to $1,037 CAD, with a median price of $641 CAD. There are currently 109 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI1 cushion diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 35%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D SI1 Natural Cushion

Quick answer

As of October 2026, there are 109 natural cushion diamonds with D color and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $383 CAD to $1,037 CAD, with a median of $641 CAD. At least 17 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 35%. Half of all listings fall between $1,873 CAD and $2,618 CAD per carat. The same specification in lab grown form lists at a median of about $915 CAD per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +6.0%.

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

109

Lowest Price

$243 CAD

Highest Price

$2,289 CAD

Average Price

$687 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

35.9%

Price Spread

35.4%

30-Day Price Trend

-0.3%

30-Day Supply Change

+6.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,500/ct

10th Percentile

$943

Median

$1,500

90th Percentile

$2,393

Score Distribution

291 diamonds scored across 4 quality tiers

Excellent

87 (29.9%)

Very Good

44 (15.1%)

Good

95 (32.6%)

Average

65 (22.3%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

D SI2SI2 inclusions are not visible without magnification

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Lab-Grown D SI1Same specifications, lab-grown origin

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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