How much does a 1.00 to 1.49ct D I1 natural round diamond cost?

As of October 2026, 1.00 to 1.49ct D I1 natural round diamonds typically cost $3,176 NZD to $9,796 NZD, with a median price of $5,621 NZD. There are currently 256 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D I1 Natural Round

Quick answer

As of October 2026, there are 256 natural round diamonds with D colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,176 NZD to $9,796 NZD, with a median of $5,621 NZD. At least 31 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between $3,430 NZD and $5,988 NZD per carat. The same specification in lab grown form lists at a median of about $1,054 NZD per carat. Over the last 30 days the median price moved -5.0% and the number of listings moved +7.2%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

256

Lowest Price

$1,643 NZD

Highest Price

$20,331 NZD

Average Price

$6,051 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

34.4%

Price Spread

59.8%

30-Day Price Trend

-5.0%

30-Day Supply Change

+7.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,411/ct

10th Percentile

$1,596

Median

$2,411

90th Percentile

$4,487

Score Distribution

757 diamonds scored across 4 quality tiers

Excellent

112 (14.8%)

Very Good

124 (16.4%)

Good

124 (16.4%)

Average

397 (52.4%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

Lab-Grown D I1Same specifications, lab-grown origin

Save 65%

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