How much does a 3.00 to 4.99ct I SI2 natural asscher diamond cost?

As of October 2026, 3.00 to 4.99ct I SI2 natural asscher diamonds typically cost $19,201 USD to $39,550 USD, with a median price of $27,918 USD. There are currently 18 diamonds matching this specification available across retailers.

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

About 48% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI2 Natural Asscher

Quick answer

As of October 2026, there are 18 natural asscher diamonds with I color and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $19,201 USD to $39,550 USD, with a median of $27,918 USD. At least 35 retailers stock this exact specification, and 48% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between $6,598 USD and $11,498 USD per carat. Over the last 30 days the median price moved -3.7% and the number of listings moved +15.5%.

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. Asscher natural stones in the index: 2,504 USD per carat, -3.3% 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

$13,066 USD

Highest Price

$86,260 USD

Average Price

$28,495 USD

Market Intelligence

Retailers Selling

Cross Retailer %

48.1%

Price Spread

50.4%

30-Day Price Trend

-3.7%

30-Day Supply Change

+15.5%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$9,717/ct

10th Percentile

$5,209

Median

$9,717

90th Percentile

$13,071

Score Distribution

26 diamonds scored across 4 quality tiers

Excellent

6 (23.1%)

Very Good

10 (38.5%)

Good

5 (19.2%)

Average

5 (19.2%)

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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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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