How much does a 3.00 to 4.99ct J SI1 natural emerald diamond cost?

As of October 2026, 3.00 to 4.99ct J SI1 natural emerald diamonds typically cost £16,346 GBP to £50,793 GBP, with a median price of £29,657 GBP. There are currently 34 diamonds matching this specification available across retailers.

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

About 28% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct J SI1 Natural Emerald

Quick answer

As of October 2026, there are 34 natural emerald diamonds with J colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £16,346 GBP to £50,793 GBP, with a median of £29,657 GBP. At least 48 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between £4,700 GBP and £7,225 GBP per carat. The same specification in lab grown form lists at a median of about £1,423 GBP per carat. Over the last 30 days the median price moved +0.5% and the number of listings moved +7.3%.

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

£11,685 GBP

Highest Price

£76,985 GBP

Average Price

£32,505 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

27.6%

Price Spread

43.1%

30-Day Price Trend

+0.5%

30-Day Supply Change

+7.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$7,858/ct

10th Percentile

$4,456

Median

$7,858

90th Percentile

$11,598

Score Distribution

164 diamonds scored across 4 quality tiers

Excellent

5 (3.0%)

Very Good

22 (13.4%)

Good

13 (7.9%)

Average

124 (75.6%)

Find Your Diamond

Search 34 J SI1 emerald diamonds and compare prices.

Search Diamonds

Consider Instead

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

J SI2SI2 inclusions are not visible without magnification

Save 26%

Lab-Grown J SI1Same specifications, lab-grown origin

Save 76%

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