How much does a 0.50 to 0.74ct I VS1 lab grown heart diamond cost?

As of October 2026, 0.50 to 0.74ct I VS1 lab grown heart diamonds typically cost $229 NZD to $790 NZD, with a median price of $343 NZD. There are currently 2 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 heart diamond?

About 56% of these diamonds are available at multiple retailers, with an average price spread of 91%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct I VS1 Lab Grown Heart

Quick answer

As of October 2026, there are 2 lab grown heart diamonds with I colour and VS1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $229 NZD to $790 NZD, with a median of $343 NZD. At least 25 retailers stock this exact specification, and 56% of the stones appear at more than one of them, with an average price spread of 91%. Half of all listings fall between $479 NZD and $1,289 NZD per carat. The same specification in natural form lists at a median of about $2,383 NZD per carat. Over the last 30 days the median price moved -6.3% and the number of listings moved +43.9%.

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 lab grown stones in the index: 421 USD per carat, -1.8% 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: October 2026

Available

Lowest Price

$200 NZD

Highest Price

$2,063 NZD

Average Price

$462 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

56.0%

Price Spread

91.2%

30-Day Price Trend

-6.3%

30-Day Supply Change

+43.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$499/ct

10th Percentile

$220

Median

$499

90th Percentile

$922

Score Distribution

5 diamonds scored across 4 quality tiers

Excellent

2 (40.0%)

Very Good

1 (20.0%)

Good

1 (20.0%)

Average

1 (20.0%)

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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