How much does a 1.50 to 1.99ct I IF natural heart diamond cost?

As of October 2026, 1.50 to 1.99ct I IF natural heart diamonds typically cost £2,972 GBP to £6,800 GBP, with a median price of £4,620 GBP. There are currently 21 diamonds matching this specification available across retailers.

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

About 62% 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.

1.50 to 1.99ct I IF Natural Heart

Quick answer

As of October 2026, there are 21 natural heart diamonds with I colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £2,972 GBP to £6,800 GBP, with a median of £4,620 GBP. At least 36 retailers stock this exact specification, and 62% of the stones appear at more than one of them, with an average price spread of 40%. Half of all listings fall between £2,776 GBP and £4,086 GBP per carat. The same specification in lab grown form lists at a median of about £309 GBP per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved +10.3%.

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

£2,492 GBP

Highest Price

£11,843 GBP

Average Price

£4,951 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

62.1%

Price Spread

40.2%

30-Day Price Trend

-2.0%

30-Day Supply Change

+10.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,368/ct

10th Percentile

$3,263

Median

$4,368

90th Percentile

$6,308

Score Distribution

31 diamonds scored across 4 quality tiers

Excellent

16 (51.6%)

Very Good

5 (16.1%)

Good

5 (16.1%)

Average

5 (16.1%)

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Consider Instead

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

J IFJ colour is visually identical to I to the naked eye

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Lab-Grown I IFSame 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