How much does a 0.75 to 0.99ct J SI2 natural oval diamond cost?

As of October 2026, 0.75 to 0.99ct J SI2 natural oval diamonds typically cost $1,385 NZD to $3,771 NZD, with a median price of $2,195 NZD. There are currently 163 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 oval diamond?

About 33% of these diamonds are available at multiple retailers, with an average price spread of 65%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct J SI2 Natural Oval

Quick answer

As of October 2026, there are 163 natural oval diamonds with J colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $1,385 NZD to $3,771 NZD, with a median of $2,195 NZD. At least 49 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 65%. Half of all listings fall between $1,873 NZD and $3,457 NZD per carat. Over the last 30 days the median price moved -4.5% and the number of listings moved +6.1%.

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: October 2026

Available

163

Lowest Price

$811 NZD

Highest Price

$7,930 NZD

Average Price

$2,427 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

33.0%

Price Spread

65.1%

30-Day Price Trend

-4.5%

30-Day Supply Change

+6.1%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,366/ct

10th Percentile

$898

Median

$1,366

90th Percentile

$2,740

Score Distribution

530 diamonds scored across 4 quality tiers

Excellent

61 (11.5%)

Very Good

97 (18.3%)

Good

140 (26.4%)

Average

232 (43.8%)

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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