How much does a 1.00 to 1.49ct F SI1 natural heart diamond cost?

As of October 2026, 1.00 to 1.49ct F SI1 natural heart diamonds typically cost $1,561 USD to $5,541 USD, with a median price of $2,246 USD. There are currently 306 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F SI1 Natural Heart

Quick answer

As of October 2026, there are 306 natural heart diamonds with F color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,561 USD to $5,541 USD, with a median of $2,246 USD. At least 66 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between $1,883 USD and $3,228 USD per carat. The same specification in lab grown form lists at a median of about $478 USD per carat. Over the last 30 days the median price moved -3.1% and the number of listings moved +16.2%.

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

306

Lowest Price

$563 USD

Highest Price

$12,000 USD

Average Price

$2,990 USD

Market Intelligence

Retailers Selling

Cross Retailer %

37.9%

Price Spread

57.6%

30-Day Price Trend

-3.1%

30-Day Supply Change

+16.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,334/ct

10th Percentile

$1,630

Median

$2,334

90th Percentile

$4,374

Score Distribution

901 diamonds scored across 4 quality tiers

Excellent

162 (18.0%)

Very Good

176 (19.5%)

Good

206 (22.9%)

Average

357 (39.6%)

Find Your Diamond

Search 306 F SI1 heart diamonds and compare prices.

Search Diamonds

Consider Instead

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

F SI2SI2 inclusions are not visible without magnification

Save 16%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 80%

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