How much does a 1.00 to 1.49ct I SI1 natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct I SI1 natural heart diamonds typically cost ₹1,07,200 INR to ₹3,44,167 INR, with a median price of ₹1,77,333 INR. There are currently 836 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct I SI1 Natural Heart

Quick answer

As of September 2026, there are 836 natural heart diamonds with I colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run ₹1,07,200 INR to ₹3,44,167 INR, with a median of ₹1,77,333 INR. At least 58 retailers stock this exact specification. Half of all listings fall between ₹1,39,613 INR and ₹2,14,446 INR per carat. The same specification in lab grown form lists at a median of about ₹1,15,926 INR 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

836

Lowest Price

₹74,185 INR

Highest Price

₹6,77,053 INR

Average Price

₹2,02,479 INR