How much does a 3.00 to 4.99ct J SI1 natural oval diamond cost?

As of October 2026, 3.00 to 4.99ct J SI1 natural oval diamonds typically cost €18,631 EUR to €49,659 EUR, with a median price of €29,576 EUR. There are currently 103 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI1 Natural Oval

Quick answer

As of October 2026, there are 103 natural oval diamonds with J colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €18,631 EUR to €49,659 EUR, with a median of €29,576 EUR. At least 53 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between €5,069 EUR and €8,555 EUR per carat. The same specification in lab grown form lists at a median of about €1,708 EUR per carat. Over the last 30 days the median price moved -3.5% and the number of listings moved +6.9%.

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

103

Lowest Price

€7,819 EUR

Highest Price

€109,404 EUR

Average Price

€33,151 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

33.6%

Price Spread

50.0%

30-Day Price Trend

-3.5%

30-Day Supply Change

+6.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$7,787/ct

10th Percentile

$4,022

Median

$7,787

90th Percentile

$11,076

Score Distribution

308 diamonds scored across 4 quality tiers

Excellent

14 (4.5%)

Very Good

58 (18.8%)

Good

52 (16.9%)

Average

184 (59.7%)

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Consider Instead

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

J SI2SI2 inclusions are not visible without magnification

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Lab-Grown J 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