How much does a 0.75 to 0.99ct J SI2 natural heart diamond cost?

As of October 2026, 0.75 to 0.99ct J SI2 natural heart diamonds typically cost €663 EUR to €1,671 EUR, with a median price of €1,002 EUR. There are currently 48 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 heart diamond?

About 31% of these diamonds are available at multiple retailers, with an average price spread of 62%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct J SI2 Natural Heart

Quick answer

As of October 2026, there are 48 natural heart diamonds with J colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €663 EUR to €1,671 EUR, with a median of €1,002 EUR. At least 38 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 62%. Half of all listings fall between €912 EUR and €1,679 EUR per carat. Over the last 30 days the median price moved +0.0% and the number of listings moved +5.4%.

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. 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: October 2026

Available

Lowest Price

€455 EUR

Highest Price

€3,701 EUR

Average Price

€1,114 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

31.1%

Price Spread

62.5%

30-Day Price Trend

+0.0%

30-Day Supply Change

+5.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,371/ct

10th Percentile

$850

Median

$1,371

90th Percentile

$2,736

Score Distribution

161 diamonds scored across 4 quality tiers

Excellent

17 (10.6%)

Very Good

17 (10.6%)

Good

29 (18.0%)

Average

98 (60.9%)

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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