How much does a 0.50 to 0.74ct J I1 natural oval diamond cost?

As of October 2026, 0.50 to 0.74ct J I1 natural oval diamonds typically cost $850 NZD to $1,501 NZD, with a median price of $1,169 NZD. There are currently 22 diamonds matching this specification available across retailers.

Where can I find the best price on a J I1 oval diamond?

About 18% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J I1 Natural Oval

Quick answer

As of October 2026, there are 22 natural oval diamonds with J colour and I1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $850 NZD to $1,501 NZD, with a median of $1,169 NZD. At least 20 retailers stock this exact specification, and 18% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between $1,454 NZD and $2,144 NZD per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved +3.2%.

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

Lowest Price

$376 NZD

Highest Price

$2,671 NZD

Average Price

$1,179 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

17.9%

Price Spread

36.8%

30-Day Price Trend

-1.3%

30-Day Supply Change

+3.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,058/ct

10th Percentile

$603

Median

$1,058

90th Percentile

$1,401

Score Distribution

103 diamonds scored across 4 quality tiers

Excellent

2 (1.9%)

Very Good

15 (14.6%)

Good

9 (8.7%)

Average

77 (74.8%)

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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