How much does a 1.50 to 1.99ct D SI1 natural oval diamond cost?

As of November 2026, 1.50 to 1.99ct D SI1 natural oval diamonds typically cost €6,208 EUR to €15,669 EUR, with a median price of €8,971 EUR. There are currently 382 diamonds matching this specification available across retailers.

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

About 28% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D SI1 Natural Oval

Quick answer

As of November 2026, there are 382 natural oval diamonds with D color and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €6,208 EUR to €15,669 EUR, with a median of €8,971 EUR. At least 64 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between €4,738 EUR and €7,164 EUR per carat. The same specification in lab grown form lists at a median of about €369 EUR per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +2.3%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

382

Lowest Price

€4,296 EUR

Highest Price

€22,847 EUR

Average Price

€10,071 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

28.4%

Price Spread

43.0%

30-Day Price Trend

-1.5%

30-Day Supply Change

+2.3%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$6,309/ct

10th Percentile

$4,566

Median

$6,309

90th Percentile

$9,706

Score Distribution

1.2K diamonds scored across 4 quality tiers

Excellent

125 (10.5%)

Very Good

263 (22.1%)

Good

221 (18.6%)

Average

582 (48.9%)

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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