How much does a 1.00 to 1.49ct J SI2 natural oval diamond cost?

As of September 2026, 1.00 to 1.49ct J SI2 natural oval diamonds typically cost €995 EUR to €2,853 EUR, with a median price of €1,712 EUR. There are currently 1,863 diamonds matching this specification available across retailers.

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1.00 to 1.49ct J SI2 Natural Oval

Quick answer

As of September 2026, there are 1,863 natural oval diamonds with J colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €995 EUR to €2,853 EUR, with a median of €1,712 EUR. At least 47 retailers stock this exact specification. Half of all listings fall between €1,184 EUR and €1,919 EUR per carat. The same specification in lab grown form lists at a median of about €1,549 EUR per carat.

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. Oval natural stones in the index: 2,380 USD per carat, -9.6% 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

1,863

Lowest Price

€563 EUR

Highest Price

€10,620 EUR

Average Price

€1,848 EUR

Market Intelligence

Retailers Selling

Price Spread

48.8%

Price Range

Price per carat distribution across retailers

$1,737/ct

10th Percentile

$1,111

Median

$1,737

90th Percentile

$2,703

Score Distribution

1.9K diamonds scored across 4 quality tiers

Excellent

145 (7.8%)

Very Good

524 (28.1%)

Good

609 (32.7%)

Average

585 (31.4%)

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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