How much does a 1.00 to 1.49ct K SI1 natural emerald diamond cost?

As of November 6, 2026, 1.00 to 1.49ct K SI1 natural emerald diamonds typically cost £705 GBP to £2,100 GBP, with a median price of £1,026 GBP. There are currently 324 diamonds matching this specification available across retailers.

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

About 41% 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.

1.00 to 1.49ct K SI1 Natural Emerald

Quick answer

As of November 6, 2026, there are 324 natural emerald diamonds with K colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £705 GBP to £2,100 GBP, with a median of £1,026 GBP. Half of all listings fall between £798 GBP and £1,270 GBP per carat. The same specification in lab grown form lists at a median of about £290 GBP per carat. Over the last 30 days the median price moved +1.1% and the number of listings moved +10.4%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Emerald natural stones in the index: 2,109 USD per carat, -8.1% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

324

Lowest Price

£545 GBP

Highest Price

£4,397 GBP

Average Price

£1,209 GBP

Market Intelligence

Cross Retailer %

40.7%

Price Spread

47.5%

30-Day Price Trend

+1.1%

30-Day Supply Change

+10.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,340/ct

10th Percentile

$937

Median

$1,340

90th Percentile

$2,443

Score Distribution

324 diamonds scored across 4 quality tiers

Excellent

57 (17.6%)

Very Good

110 (34.0%)

Good

84 (25.9%)

Average

73 (22.5%)

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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