How much does a 1.00 to 1.49ct I SI2 natural heart diamond cost?

As of October 2026, 1.00 to 1.49ct I SI2 natural heart diamonds typically cost ₹1,17,824 INR to ₹3,52,265 INR, with a median price of ₹2,04,617 INR. There are currently 315 diamonds matching this specification available across retailers.

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

About 43% of these diamonds are available at multiple retailers, with an average price spread of 58%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I SI2 Natural Heart

Quick answer

As of October 2026, there are 315 natural heart diamonds with I colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run ₹1,17,824 INR to ₹3,52,265 INR, with a median of ₹2,04,617 INR. At least 57 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 58%. Half of all listings fall between ₹1,44,996 INR and ₹2,49,274 INR per carat. The same specification in lab grown form lists at a median of about ₹1,54,364 INR per carat. Over the last 30 days the median price moved -2.5% and the number of listings moved +18.2%.

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 natural stones in the index: 2,374 USD per carat, +9.8% 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

315

Lowest Price

₹67,415 INR

Highest Price

₹7,16,525 INR

Average Price

₹2,18,701 INR

Market Intelligence

Retailers Selling

Cross Retailer %

42.9%

Price Spread

58.2%

30-Day Price Trend

-2.5%

30-Day Supply Change

+18.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,888/ct

10th Percentile

$1,245

Median

$1,888

90th Percentile

$3,774

Score Distribution

771 diamonds scored across 4 quality tiers

Excellent

141 (18.3%)

Very Good

126 (16.3%)

Good

178 (23.1%)

Average

326 (42.3%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J SI2J colour is visually identical to I to the naked eye

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Lab-Grown I SI2Same specifications, lab-grown origin

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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