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 $670 AUD to $2,153 AUD, with a median price of $1,237 AUD. There are currently 643 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 643 natural round diamonds with H colour and I1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $670 AUD to $2,153 AUD, with a median of $1,237 AUD. 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 $1,325 AUD and $2,471 AUD per carat. The same specification in lab grown form lists at a median of about $859 AUD per carat. Over the last 30 days the median price moved -3.4% and the number of listings moved -2.4%.

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

643

Lowest Price

$276 AUD

Highest Price

$4,260 AUD

Average Price

$1,342 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

29.2%

Price Spread

65.8%

30-Day Price Trend

-3.4%

30-Day Supply Change

-2.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,225/ct

10th Percentile

$719

Median

$1,225

90th Percentile

$2,550

Score Distribution

1.2K diamonds scored across 4 quality tiers

Excellent

129 (10.7%)

Very Good

228 (18.8%)

Good

215 (17.8%)

Average

639 (52.8%)

Find Your Diamond

Search 643 H I1 round diamonds and compare prices.

Search Diamonds

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

Save 51%

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