How much does a 0.20 to 0.49ct J SI1 natural emerald diamond cost?

As of October 2026, 0.20 to 0.49ct J SI1 natural emerald diamonds typically cost $269 AUD to $710 AUD, with a median price of $462 AUD. There are currently 60 diamonds matching this specification available across retailers.

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

About 33% 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.

0.20 to 0.49ct J SI1 Natural Emerald

Quick answer

As of October 2026, there are 60 natural emerald diamonds with J colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $269 AUD to $710 AUD, with a median of $462 AUD. At least 33 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between $1,103 AUD and $1,717 AUD per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved -9.6%.

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. Emerald natural stones in the index: 2,278 USD per carat, +6.2% 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

$200 AUD

Highest Price

$1,412 AUD

Average Price

$489 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

33.3%

Price Spread

46.7%

30-Day Price Trend

-0.3%

30-Day Supply Change

-9.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$926/ct

10th Percentile

$613

Median

$926

90th Percentile

$1,472

Score Distribution

134 diamonds scored across 4 quality tiers

Excellent

19 (14.2%)

Very Good

24 (17.9%)

Good

19 (14.2%)

Average

72 (53.7%)

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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