How much does a 5.00ct+ D SI1 natural emerald diamond cost?

As of October 2026, 5.00ct+ D SI1 natural emerald diamonds typically cost £68,846 GBP to £158,154 GBP, with a median price of £108,881 GBP. There are currently 11 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 30%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ D SI1 Natural Emerald

Quick answer

As of October 2026, there are 11 natural emerald diamonds with D colour and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £68,846 GBP to £158,154 GBP, with a median of £108,881 GBP. At least 24 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 30%. Half of all listings fall between £18,206 GBP and £24,750 GBP per carat. The same specification in lab grown form lists at a median of about £268 GBP per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +9.7%.

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

£64,963 GBP

Highest Price

£230,228 GBP

Average Price

£112,406 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

32.8%

Price Spread

29.8%

30-Day Price Trend

-0.3%

30-Day Supply Change

+9.7%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$29,238/ct

10th Percentile

$19,360

Median

$29,238

90th Percentile

$36,831

Score Distribution

26 diamonds scored across 4 quality tiers

Excellent

4 (15.4%)

Very Good

5 (19.2%)

Good

7 (26.9%)

Average

10 (38.5%)

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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

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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