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

As of October 2026, 0.20 to 0.49ct D SI1 natural emerald diamonds typically cost $417 AUD to $1,181 AUD, with a median price of $668 AUD. There are currently 592 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 51%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D SI1 Natural Emerald

Quick answer

As of October 2026, there are 592 natural emerald diamonds with D colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $417 AUD to $1,181 AUD, with a median of $668 AUD. At least 21 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 51%. Half of all listings fall between $1,458 AUD and $2,367 AUD per carat. The same specification in lab grown form lists at a median of about $1,109 AUD per carat. Over the last 30 days the median price moved -5.3% and the number of listings moved +18.3%.

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

592

Lowest Price

$160 AUD

Highest Price

$2,346 AUD

Average Price

$747 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

34.9%

Price Spread

50.8%

30-Day Price Trend

-5.3%

30-Day Supply Change

+18.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,258/ct

10th Percentile

$935

Median

$1,258

90th Percentile

$2,382

Score Distribution

1.4K diamonds scored across 4 quality tiers

Excellent

157 (11.1%)

Very Good

481 (33.9%)

Good

179 (12.6%)

Average

601 (42.4%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

Lab-Grown D SI1Same specifications, lab-grown origin

Save 23%

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