How much does a 5.00ct+ I SI2 natural round diamond cost?

As of September 2026, 5.00ct+ I SI2 natural round diamonds typically cost ₹32,64,752 INR to ₹1,41,18,321 INR, with a median price of ₹67,22,929 INR. There are currently 338 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 round diamond?

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

5.00ct+ I SI2 Natural Round

Quick answer

As of September 2026, there are 338 natural round diamonds with I colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run ₹32,64,752 INR to ₹1,41,18,321 INR, with a median of ₹67,22,929 INR. At least 12 retailers stock this exact specification. Half of all listings fall between ₹11,41,522 INR and ₹19,61,386 INR per carat. The same specification in lab grown form lists at a median of about ₹10,33,252 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. Round natural stones in the index: 2,094 USD per carat, -3.8% 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

338

Lowest Price

₹17,06,751 INR

Highest Price

₹8,38,65,511 INR

Average Price

₹81,96,556 INR