How much does a 1.00 to 1.49ct H SI1 natural oval diamond cost?

As of November 2026, 1.00 to 1.49ct H SI1 natural oval diamonds typically cost €1,842 EUR to €5,016 EUR, with a median price of €2,846 EUR. There are currently 916 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H SI1 Natural Oval

Quick answer

As of November 2026, there are 916 natural oval diamonds with H color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,842 EUR to €5,016 EUR, with a median of €2,846 EUR. At least 62 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between €1,985 EUR and €3,146 EUR per carat. The same specification in lab grown form lists at a median of about €791 EUR per carat. Over the last 30 days the median price moved +0.5% and the number of listings moved +2.6%.

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: November 2026

Available

916

Lowest Price

€1,043 EUR

Highest Price

€9,222 EUR

Average Price

€3,187 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

36.0%

Price Spread

47.7%

30-Day Price Trend

+0.5%

30-Day Supply Change

+2.6%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,719/ct

10th Percentile

$1,857

Median

$2,719

90th Percentile

$4,665

Score Distribution

2.3K diamonds scored across 4 quality tiers

Excellent

214 (9.1%)

Very Good

640 (27.2%)

Good

435 (18.5%)

Average

1,060 (45.1%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

Save 16%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 58%

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