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

As of November 2026, 1.50 to 1.99ct D SI2 natural cushion diamonds typically cost €3,384 EUR to €12,432 EUR, with a median price of €6,101 EUR. There are currently 124 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D SI2 Natural Cushion

Quick answer

As of November 2026, there are 124 natural cushion diamonds with D color and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €3,384 EUR to €12,432 EUR, with a median of €6,101 EUR. At least 53 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 53%. Half of all listings fall between €2,736 EUR and €4,597 EUR per carat. The same specification in lab grown form lists at a median of about €417 EUR per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +3.8%.

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: November 2026

Available

124

Lowest Price

€2,082 EUR

Highest Price

€20,196 EUR

Average Price

€7,019 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

30.9%

Price Spread

53.0%

30-Day Price Trend

-2.3%

30-Day Supply Change

+3.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,921/ct

10th Percentile

$2,568

Median

$3,921

90th Percentile

$6,416

Score Distribution

341 diamonds scored across 4 quality tiers

Excellent

65 (19.1%)

Very Good

59 (17.3%)

Good

70 (20.5%)

Average

147 (43.1%)

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Consider Instead

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

Lab-Grown D SI2Same 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