How much does a 1.00 to 1.49ct I VS1 natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct I VS1 natural heart diamonds typically cost £1,262 GBP to £3,506 GBP, with a median price of £1,798 GBP. There are currently 670 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct I VS1 Natural Heart

Quick answer

As of September 2026, there are 670 natural heart diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,262 GBP to £3,506 GBP, with a median of £1,798 GBP. At least 55 retailers stock this exact specification. Half of all listings fall between £1,635 GBP and £2,221 GBP per carat. The same specification in lab grown form lists at a median of about £610 GBP per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart natural stones in the index: 2,261 USD per carat, +1.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

670

Lowest Price

£729 GBP

Highest Price

£7,869 GBP

Average Price

£2,083 GBP