How much does a 1.50 to 1.99ct H SI1 natural round diamond cost?

As of October 2026, 1.50 to 1.99ct H SI1 natural round diamonds typically cost ₹4,77,671 INR to ₹13,71,281 INR, with a median price of ₹7,86,527 INR. There are currently 1,979 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct H SI1 Natural Round

Quick answer

As of October 2026, there are 1,979 natural round diamonds with H colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run ₹4,77,671 INR to ₹13,71,281 INR, with a median of ₹7,86,527 INR. At least 68 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between ₹3,54,710 INR and ₹5,64,498 INR per carat. The same specification in lab grown form lists at a median of about ₹1,00,261 INR per carat. Over the last 30 days the median price moved -2.2% and the number of listings moved +17.0%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

1,979

Lowest Price

₹2,64,111 INR

Highest Price

₹22,13,446 INR

Average Price

₹8,64,055 INR

Market Intelligence

Retailers Selling

Cross Retailer %

40.4%

Price Spread

47.0%

30-Day Price Trend

-2.2%

30-Day Supply Change

+17.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,692/ct

10th Percentile

$3,006

Median

$4,692

90th Percentile

$7,503

Score Distribution

4.4K diamonds scored across 4 quality tiers

Excellent

476 (10.9%)

Very Good

1,181 (27.1%)

Good

1,003 (23.0%)

Average

1,701 (39.0%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

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Lab-Grown H SI1Same 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