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

As of October 2026, 0.50 to 0.74ct D SI1 natural heart diamonds typically cost $769 SGD to $2,487 SGD, with a median price of $1,268 SGD. There are currently 382 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 61%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI1 Natural Heart

Quick answer

As of October 2026, there are 382 natural heart diamonds with D colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $769 SGD to $2,487 SGD, with a median of $1,268 SGD. At least 57 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 61%. Half of all listings fall between $1,483 SGD and $2,604 SGD per carat. The same specification in lab grown form lists at a median of about $707 SGD per carat. Over the last 30 days the median price moved -2.1% and the number of listings moved -8.9%.

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 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

382

Lowest Price

$545 SGD

Highest Price

$4,215 SGD

Average Price

$1,461 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

30.7%

Price Spread

61.3%

30-Day Price Trend

-2.1%

30-Day Supply Change

-8.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,427/ct

10th Percentile

$970

Median

$1,427

90th Percentile

$3,162

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

143 (13.6%)

Very Good

127 (12.1%)

Good

332 (31.6%)

Average

448 (42.7%)

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Consider Instead

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

D SI2SI2 inclusions are not visible without magnification

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Lab-Grown D SI1Same 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