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

As of October 2026, 0.20 to 0.49ct F SI2 natural emerald diamonds typically cost £191 GBP to £440 GBP, with a median price of £263 GBP. There are currently 189 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 26%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F SI2 Natural Emerald

Quick answer

As of October 2026, there are 189 natural emerald diamonds with F colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £191 GBP to £440 GBP, with a median of £263 GBP. At least 18 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 26%. Half of all listings fall between £797 GBP and £1,033 GBP per carat. Over the last 30 days the median price moved -4.0% and the number of listings moved +12.0%.

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

189

Lowest Price

£117 GBP

Highest Price

£965 GBP

Average Price

£302 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

26.2%

30-Day Price Trend

-4.0%

30-Day Supply Change

+12.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,200/ct

10th Percentile

$991

Median

$1,200

90th Percentile

$1,717

Score Distribution

477 diamonds scored across 4 quality tiers

Excellent

59 (12.4%)

Very Good

149 (31.2%)

Good

63 (13.2%)

Average

206 (43.2%)

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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