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

As of September 2026, 3.00 to 4.99ct I SI2 natural asscher diamonds typically cost $19,235 USD to $37,213 USD, with a median price of $28,363 USD. There are currently 30 diamonds matching this specification available across retailers.

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

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

3.00 to 4.99ct I SI2 Natural Asscher

Quick answer

As of September 2026, there are 30 natural asscher diamonds with I color and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $19,235 USD to $37,213 USD, with a median of $28,363 USD. At least 16 retailers stock this exact specification. Half of all listings fall between $6,203 USD and $8,391 USD per carat. The same specification in lab grown form lists at a median of about $13,435 USD 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. Asscher natural stones in the index: 2,601 USD per carat, +11.1% 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

Lowest Price

$13,159 USD

Highest Price

$66,804 USD

Average Price

$28,097 USD

Market Intelligence

Retailers Selling

Price Spread

29.4%

Price Range

Price per carat distribution across retailers

$7,436/ct

10th Percentile

$4,928

Median

$7,436

90th Percentile

$9,222

Score Distribution

30 diamonds scored across 4 quality tiers

Excellent

7 (23.3%)

Very Good

15 (50.0%)

Good

4 (13.3%)

Average

4 (13.3%)

Find Your Diamond

Search 30 I SI2 asscher diamonds and compare prices.

Search Diamonds

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

Save 20%

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