How much does a 1.00 to 1.49ct L SI2 natural round diamond cost?

As of November 6, 2026, 1.00 to 1.49ct L SI2 natural round diamonds typically cost €895 EUR to €2,409 EUR, with a median price of €1,637 EUR. There are currently 782 diamonds matching this specification available across retailers.

Where can I find the best price on a L SI2 round diamond?

About 57% of these diamonds are available at multiple retailers, with an average price spread of 56%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct L SI2 Natural Round

Quick answer

As of November 6, 2026, there are 782 natural round diamonds with L colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €895 EUR to €2,409 EUR, with a median of €1,637 EUR. Half of all listings fall between €1,071 EUR and €1,884 EUR per carat. The same specification in lab grown form lists at a median of about €696 EUR per carat. Over the last 30 days the median price moved +1.3% and the number of listings moved +10.3%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Round natural stones in the index: 2,124 USD per carat, -6.9% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

782

Lowest Price

€490 EUR

Highest Price

€5,220 EUR

Average Price

€1,654 EUR

Market Intelligence

Cross Retailer %

56.8%

Price Spread

56.2%

30-Day Price Trend

+1.3%

30-Day Supply Change

+10.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,623/ct

10th Percentile

$965

Median

$1,623

90th Percentile

$2,461

Score Distribution

782 diamonds scored across 4 quality tiers

Excellent

98 (12.5%)

Very Good

242 (30.9%)

Good

204 (26.1%)

Average

238 (30.4%)

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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