How much does a 0.50 to 0.74ct H SI1 natural heart diamond cost?

As of November 2026, 0.50 to 0.74ct H SI1 natural heart diamonds typically cost $735 NZD to $2,102 NZD, with a median price of $1,059 NZD. There are currently 500 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 heart diamond?

About 33% of these diamonds are available at multiple retailers, with an average price spread of 40%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct H SI1 Natural Heart

Quick answer

As of November 2026, there are 500 natural heart diamonds with H colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $735 NZD to $2,102 NZD, with a median of $1,059 NZD. At least 55 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 40%. Half of all listings fall between $1,557 NZD and $2,292 NZD per carat. The same specification in lab grown form lists at a median of about $998 NZD per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved +1.0%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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: November 2026

Available

500

Lowest Price

$636 NZD

Highest Price

$3,672 NZD

Average Price

$1,264 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

32.7%

Price Spread

39.8%

30-Day Price Trend

-1.7%

30-Day Supply Change

+1.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,041/ct

10th Percentile

$770

Median

$1,041

90th Percentile

$1,949

Score Distribution

1.2K diamonds scored across 4 quality tiers

Excellent

271 (22.3%)

Very Good

106 (8.7%)

Good

380 (31.3%)

Average

459 (37.7%)

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Consider Instead

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

Lab-Grown H SI1Same specifications, lab-grown origin

Save 46%

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