How much does a 0.20 to 0.49ct F SI1 natural oval diamond cost?

As of October 2026, 0.20 to 0.49ct F SI1 natural oval diamonds typically cost €259 EUR to €717 EUR, with a median price of €421 EUR. There are currently 2,838 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 44%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F SI1 Natural Oval

Quick answer

As of October 2026, there are 2,838 natural oval diamonds with F color and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run €259 EUR to €717 EUR, with a median of €421 EUR. At least 26 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 44%. Half of all listings fall between €1,070 EUR and €1,653 EUR per carat. The same specification in lab grown form lists at a median of about €485 EUR per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved +15.6%.

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

2,838

Lowest Price

€110 EUR

Highest Price

€1,221 EUR

Average Price

€448 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

31.4%

Price Spread

44.0%

30-Day Price Trend

-2.0%

30-Day Supply Change

+15.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,480/ct

10th Percentile

$952

Median

$1,480

90th Percentile

$2,155

Score Distribution

5.6K diamonds scored across 4 quality tiers

Excellent

603 (10.8%)

Very Good

1,279 (23.0%)

Good

1,826 (32.9%)

Average

1,850 (33.3%)

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Consider Instead

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

F SI2SI2 inclusions are not visible without magnification

Save 16%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 74%

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