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

As of October 2026, 1.00 to 1.49ct H I1 natural round diamonds typically cost €1,193 EUR to €3,989 EUR, with a median price of €2,240 EUR. There are currently 570 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H I1 Natural Round

Quick answer

As of October 2026, there are 570 natural round diamonds with H colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,193 EUR to €3,989 EUR, with a median of €2,240 EUR. At least 31 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 67%. Half of all listings fall between €1,273 EUR and €2,423 EUR per carat. The same specification in lab grown form lists at a median of about €762 EUR per carat. Over the last 30 days the median price moved -6.3% and the number of listings moved +5.3%.

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

570

Lowest Price

€606 EUR

Highest Price

€7,290 EUR

Average Price

€2,467 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

31.4%

Price Spread

67.2%

30-Day Price Trend

-6.3%

30-Day Supply Change

+5.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,912/ct

10th Percentile

$1,071

Median

$1,912

90th Percentile

$3,689

Score Distribution

1.5K diamonds scored across 4 quality tiers

Excellent

90 (6.2%)

Very Good

304 (20.8%)

Good

241 (16.5%)

Average

825 (56.5%)

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Consider Instead

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

Lab-Grown H I1Same specifications, lab-grown origin

Save 36%

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