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

As of October 2026, 1.50 to 1.99ct D SI2 natural oval diamonds typically cost €4,405 EUR to €12,659 EUR, with a median price of €7,030 EUR. There are currently 503 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D SI2 Natural Oval

Quick answer

As of October 2026, there are 503 natural oval diamonds with D colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €4,405 EUR to €12,659 EUR, with a median of €7,030 EUR. At least 55 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between €3,478 EUR and €5,586 EUR per carat. The same specification in lab grown form lists at a median of about €290 EUR per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +2.8%.

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. 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: October 2026

Available

503

Lowest Price

€2,217 EUR

Highest Price

€22,705 EUR

Average Price

€7,790 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

33.8%

Price Spread

48.5%

30-Day Price Trend

-1.5%

30-Day Supply Change

+2.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$4,838/ct

10th Percentile

$3,165

Median

$4,838

90th Percentile

$7,688

Score Distribution

1.5K diamonds scored across 4 quality tiers

Excellent

335 (21.8%)

Very Good

406 (26.4%)

Good

301 (19.6%)

Average

497 (32.3%)

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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