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 $1,159 USD to $3,292 USD, with a median price of $1,980 USD. 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 color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,159 USD to $3,292 USD, with a median of $1,980 USD. At least 47 retailers stock this exact specification. Half of all listings fall between $1,375 USD and $2,218 USD per carat. The same specification in lab grown form lists at a median of about $1,789 USD 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

$650 USD

Highest Price

$12,254 USD

Average Price

$2,138 USD

Market Intelligence

Retailers Selling

Price Spread

48.3%

Price Range

Price per carat distribution across retailers

$1,744/ct

10th Percentile

$1,116

Median

$1,744

90th Percentile

$2,710

Score Distribution

1.9K diamonds scored across 4 quality tiers

Excellent

148 (7.9%)

Very Good

518 (27.8%)

Good

611 (32.8%)

Average

586 (31.5%)

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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