How much does a 0.50 to 0.74ct H I1 natural round diamond cost?

As of October 2026, 0.50 to 0.74ct H I1 natural round diamonds typically cost $835 NZD to $2,714 NZD, with a median price of $1,544 NZD. There are currently 616 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 66%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct H I1 Natural Round

Quick answer

As of October 2026, there are 616 natural round diamonds with H colour and I1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $835 NZD to $2,714 NZD, with a median of $1,544 NZD. At least 30 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 66%. Half of all listings fall between $1,657 NZD and $3,102 NZD per carat. The same specification in lab grown form lists at a median of about $1,072 NZD per carat. Over the last 30 days the median price moved -1.9% 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

616

Lowest Price

$344 NZD

Highest Price

$5,417 NZD

Average Price

$1,685 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

29.3%

Price Spread

66.4%

30-Day Price Trend

-1.9%

30-Day Supply Change

-7.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,226/ct

10th Percentile

$719

Median

$1,226

90th Percentile

$2,570

Score Distribution

1.2K diamonds scored across 4 quality tiers

Excellent

120 (10.4%)

Very Good

197 (17.1%)

Good

209 (18.1%)

Average

627 (54.4%)

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Consider Instead

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

Lab-Grown H I1Same specifications, lab-grown origin

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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