How much does a 1.50 to 1.99ct G IF natural cushion diamond cost?

As of October 2026, 1.50 to 1.99ct G IF natural cushion diamonds typically cost £5,088 GBP to £13,661 GBP, with a median price of £7,553 GBP. There are currently 14 diamonds matching this specification available across retailers.

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

About 32% of these diamonds are available at multiple retailers, with an average price spread of 44%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G IF Natural Cushion

Quick answer

As of October 2026, there are 14 natural cushion diamonds with G colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £5,088 GBP to £13,661 GBP, with a median of £7,553 GBP. At least 48 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 44%. Half of all listings fall between £4,372 GBP and £6,756 GBP per carat. The same specification in lab grown form lists at a median of about £823 GBP per carat. Over the last 30 days the median price moved -3.9% and the number of listings moved +8.9%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

Lowest Price

£3,239 GBP

Highest Price

£16,708 GBP

Average Price

£8,384 GBP