How much does a 1.50 to 1.99ct D I1 natural oval diamond cost?

As of October 2026, 1.50 to 1.99ct D I1 natural oval diamonds typically cost $7,414 NZD to $24,307 NZD, with a median price of $13,602 NZD. There are currently 51 diamonds matching this specification available across retailers.

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

About 17% of these diamonds are available at multiple retailers, with an average price spread of 57%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D I1 Natural Oval

Quick answer

As of October 2026, there are 51 natural oval diamonds with D colour and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $7,414 NZD to $24,307 NZD, with a median of $13,602 NZD. At least 28 retailers stock this exact specification, and 17% of the stones appear at more than one of them, with an average price spread of 57%. Half of all listings fall between $5,910 NZD and $10,287 NZD per carat. Over the last 30 days the median price moved -2.8% and the number of listings moved +0.3%.

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

$2,411 NZD

Highest Price

$33,258 NZD

Average Price

$14,961 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

16.8%

Price Spread

56.9%

30-Day Price Trend

-2.8%

30-Day Supply Change

+0.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,337/ct

10th Percentile

$2,672

Median

$4,337

90th Percentile

$6,865

Score Distribution

217 diamonds scored across 4 quality tiers

Excellent

28 (12.9%)

Very Good

34 (15.7%)

Good

20 (9.2%)

Average

135 (62.2%)

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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