How much does a 1.50 to 1.99ct I SI1 natural pear diamond cost?

As of October 2026, 1.50 to 1.99ct I SI1 natural pear diamonds typically cost £2,883 GBP to £8,566 GBP, with a median price of £4,928 GBP. There are currently 280 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I SI1 Natural Pear

Quick answer

As of October 2026, there are 280 natural pear diamonds with I colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £2,883 GBP to £8,566 GBP, with a median of £4,928 GBP. At least 60 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between £2,761 GBP and £4,491 GBP per carat. The same specification in lab grown form lists at a median of about £817 GBP per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved +16.3%.

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. Pear natural stones in the index: 2,307 USD per carat, +13.7% 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

280

Lowest Price

£1,471 GBP

Highest Price

£15,665 GBP

Average Price

£5,467 GBP