How much does a 0.20 to 0.49ct I SI1 natural asscher diamond cost?

As of October 2026, 0.20 to 0.49ct I SI1 natural asscher diamonds typically cost $730 NZD to $1,163 NZD, with a median price of $1,013 NZD. There are currently 5 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 24%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I SI1 Natural Asscher

Quick answer

As of October 2026, there are 5 natural asscher diamonds with I colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $730 NZD to $1,163 NZD, with a median of $1,013 NZD. At least 24 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 24%. Half of all listings fall between $2,277 NZD and $2,904 NZD per carat. Over the last 30 days the median price moved +0.3% and the number of listings moved -13.7%.

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

$520 NZD

Highest Price

$1,915 NZD

Average Price

$1,003 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

31.3%

Price Spread

24.5%

30-Day Price Trend

+0.3%

30-Day Supply Change

-13.7%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,443/ct

10th Percentile

$1,025

Median

$1,443

90th Percentile

$2,054

Score Distribution

23 diamonds scored across 4 quality tiers

Excellent

2 (8.7%)

Very Good

3 (13.0%)

Good

1 (4.3%)

Average

17 (73.9%)

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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