How much does a 5.00ct+ I SI1 lab grown heart diamond cost?

As of October 2026, 5.00ct+ I SI1 lab grown heart diamonds typically cost ₹79,378 INR to ₹16,61,720 INR, with a median price of ₹7,23,044 INR. There are currently 2 diamonds matching this specification available across retailers.

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

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5.00ct+ I SI1 Lab Grown Heart

Quick answer

As of October 2026, there are 2 lab grown heart diamonds with I colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run ₹79,378 INR to ₹16,61,720 INR, with a median of ₹7,23,044 INR.

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 lab grown stones in the index: 421 USD per carat, -1.8% 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

Lowest Price

₹75,770 INR

Highest Price

₹20,45,318 INR

Average Price

₹8,03,049 INR

Score Distribution

5 diamonds scored across 3 quality tiers

Excellent

1 (20.0%)

Very Good

2 (40.0%)

Average

2 (40.0%)

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1