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

As of October 2026, 1.00 to 1.49ct I SI2 natural asscher diamonds typically cost $1,809 AUD to $5,751 AUD, with a median price of $3,117 AUD. There are currently 39 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 63%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I SI2 Natural Asscher

Quick answer

As of October 2026, there are 39 natural asscher diamonds with I colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,809 AUD to $5,751 AUD, with a median of $3,117 AUD. At least 45 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 63%. Half of all listings fall between $1,986 AUD and $3,734 AUD per carat. Over the last 30 days the median price moved -1.2% and the number of listings moved +5.1%.

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

$1,130 AUD

Highest Price

$9,984 AUD

Average Price

$3,592 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

28.7%

Price Spread

63.2%

30-Day Price Trend

-1.2%

30-Day Supply Change

+5.1%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,943/ct

10th Percentile

$1,196

Median

$1,943

90th Percentile

$3,422

Score Distribution

147 diamonds scored across 4 quality tiers

Excellent

12 (8.2%)

Very Good

18 (12.2%)

Good

20 (13.6%)

Average

97 (66.0%)

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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