How much does a 1.00 to 1.49ct I I1 natural oval diamond cost?

As of September 2026, 1.00 to 1.49ct I I1 natural oval diamonds typically cost $1,829 NZD to $6,638 NZD, with a median price of $3,628 NZD. There are currently 349 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 42%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I I1 Natural Oval

Quick answer

As of September 2026, there are 349 natural oval diamonds with I colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,829 NZD to $6,638 NZD, with a median of $3,628 NZD. At least 29 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 42%. Half of all listings fall between $2,563 NZD and $3,934 NZD per carat. The same specification in lab grown form lists at a median of about $3,294 NZD per carat. Over the last 30 days the median price moved -3.8% and the number of listings moved -2.0%.

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

349

Lowest Price

$1,026 NZD

Highest Price

$10,890 NZD

Average Price

$3,991 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

39.9%

Price Spread

41.8%

30-Day Price Trend

-3.8%

30-Day Supply Change

-2.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,971/ct

10th Percentile

$1,116

Median

$1,971

90th Percentile

$2,709

Score Distribution

349 diamonds scored across 4 quality tiers

Excellent

5 (1.4%)

Very Good

91 (26.1%)

Good

62 (17.8%)

Average

191 (54.7%)

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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