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

As of October 2026, 0.20 to 0.49ct H SI2 natural emerald diamonds typically cost £197 GBP to £412 GBP, with a median price of £263 GBP. There are currently 72 diamonds matching this specification available across retailers.

Where can I find the best price on a H 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 H SI2 Natural Emerald

Quick answer

As of October 2026, there are 72 natural emerald diamonds with H colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £197 GBP to £412 GBP, with a median of £263 GBP. 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 £574 GBP and £921 GBP per carat. The same specification in lab grown form lists at a median of about £370 GBP 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

£116 GBP

Highest Price

£782 GBP

Average Price

£296 GBP

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

195 diamonds scored across 4 quality tiers

Excellent

5 (2.6%)

Very Good

67 (34.4%)

Good

25 (12.8%)

Average

98 (50.3%)

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Consider Instead

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

Lab-Grown H 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