How much does a 5.00ct+ D I1 natural oval diamond cost?

As of September 2026, 5.00ct+ D I1 natural oval diamonds typically cost $115,690 NZD to $213,311 NZD, with a median price of $128,197 NZD. There are currently 5 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ D I1 Natural Oval

Quick answer

As of September 2026, there are 5 natural oval diamonds with D colour and I1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $115,690 NZD to $213,311 NZD, with a median of $128,197 NZD. At least 9 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between $13,235 NZD and $31,726 NZD per carat. Over the last 30 days the median price moved -40.4% and the number of listings moved -85.4%.

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

5.02ct Oval D I1, GIA, score 66 of 100, from $146,487 NZD

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

Lowest Price

$108,427 NZD

Highest Price

$257,861 NZD

Average Price

$153,511 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

36.4%

Price Spread

85.4%

30-Day Price Trend

-40.4%

30-Day Supply Change

-85.4%

Price Range

Price per carat distribution across retailers

$12,985/ct

10th Percentile

$7,083

Median

$12,985

90th Percentile

$27,728

Score Distribution

5 diamonds scored across 3 quality tiers

Very Good

2 (40.0%)

Good

2 (40.0%)

Average

1 (20.0%)

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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