How much does a 3.00 to 4.99ct G I1 natural round diamond cost?

As of September 2026, 3.00 to 4.99ct G I1 natural round diamonds typically cost €8,378 EUR to €38,189 EUR, with a median price of €18,886 EUR. There are currently 110 diamonds matching this specification available across retailers.

Where can I find the best price on a G I1 round diamond?

About 48% of these diamonds are available at multiple retailers, with an average price spread of 87%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G I1 Natural Round

Quick answer

As of September 2026, there are 110 natural round diamonds with G colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €8,378 EUR to €38,189 EUR, with a median of €18,886 EUR. At least 23 retailers stock this exact specification, and 48% of the stones appear at more than one of them, with an average price spread of 87%. Half of all listings fall between €3,664 EUR and €9,469 EUR per carat. The same specification in lab grown form lists at a median of about €4,739 EUR per carat. Over the last 30 days the median price moved -13.8% and the number of listings moved -2.9%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

110

Lowest Price

€4,851 EUR

Highest Price

€74,287 EUR

Average Price

€20,837 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

48.2%

Price Spread

87.5%

30-Day Price Trend

-13.8%

30-Day Supply Change

-2.9%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$7,659/ct

10th Percentile

$3,045

Median

$7,659

90th Percentile

$13,520

Score Distribution

110 diamonds scored across 4 quality tiers

Excellent

11 (10.0%)

Very Good

49 (44.5%)

Good

12 (10.9%)

Average

38 (34.5%)

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Consider Instead

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

H I1H colour is visually identical to G to the naked eye

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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