How much does a 1.00 to 1.49ct J I1 natural round diamond cost?

As of October 2026, 1.00 to 1.49ct J I1 natural round diamonds typically cost €1,008 EUR to €3,219 EUR, with a median price of €1,865 EUR. There are currently 406 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 68%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J I1 Natural Round

Quick answer

As of October 2026, there are 406 natural round diamonds with J colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,008 EUR to €3,219 EUR, with a median of €1,865 EUR. At least 31 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 68%. Half of all listings fall between €1,109 EUR and €2,103 EUR per carat. The same specification in lab grown form lists at a median of about €640 EUR per carat. Over the last 30 days the median price moved -3.0% and the number of listings moved +7.9%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

406

Lowest Price

€468 EUR

Highest Price

€6,250 EUR

Average Price

€2,058 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

33.7%

Price Spread

67.7%

30-Day Price Trend

-3.0%

30-Day Supply Change

+7.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,639/ct

10th Percentile

$936

Median

$1,639

90th Percentile

$3,241

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

61 (5.4%)

Very Good

217 (19.3%)

Good

152 (13.5%)

Average

693 (61.7%)

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Consider Instead

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

Lab-Grown J I1Same 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