How much does a 0.20 to 0.49ct I SI2 natural emerald diamond cost?

As of October 2026, 0.20 to 0.49ct I SI2 natural emerald diamonds typically cost $244 USD to $467 USD, with a median price of $332 USD. There are currently 62 diamonds matching this specification available across retailers.

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

About 29% 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 I SI2 Natural Emerald

Quick answer

As of October 2026, there are 62 natural emerald diamonds with I color and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $244 USD to $467 USD, with a median of $332 USD. At least 14 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 51%. Half of all listings fall between $765 USD and $1,226 USD per carat. The same specification in lab grown form lists at a median of about $493 USD per carat. Over the last 30 days the median price moved -6.8% and the number of listings moved +69.3%.

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

Lowest Price

$143 USD

Highest Price

$876 USD

Average Price

$351 USD

Market Intelligence

Retailers Selling

Cross Retailer %

28.6%

Price Spread

51.0%

30-Day Price Trend

-6.8%

30-Day Supply Change

+69.3%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$904/ct

10th Percentile

$676

Median

$904

90th Percentile

$1,808

Score Distribution

155 diamonds scored across 4 quality tiers

Excellent

8 (5.2%)

Very Good

57 (36.8%)

Good

20 (12.9%)

Average

70 (45.2%)

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Consider Instead

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

Lab-Grown I SI2Same specifications, lab-grown origin

Save 45%

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