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

As of October 2026, 1.00 to 1.49ct I VS1 natural heart diamonds typically cost £1,247 GBP to £3,994 GBP, with a median price of £1,826 GBP. There are currently 249 diamonds matching this specification available across retailers.

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

About 39% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I VS1 Natural Heart

Quick answer

As of October 2026, there are 249 natural heart diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,247 GBP to £3,994 GBP, with a median of £1,826 GBP. At least 62 retailers stock this exact specification, and 39% of the stones appear at more than one of them, with an average price spread of 53%. Half of all listings fall between £1,596 GBP and £2,604 GBP per carat. The same specification in lab grown form lists at a median of about £379 GBP per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved +6.9%.

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

249

Lowest Price

£722 GBP

Highest Price

£7,982 GBP

Average Price

£2,293 GBP