How much does a 3.00 to 4.99ct I SI2 natural emerald diamond cost?

As of October 2026, 3.00 to 4.99ct I SI2 natural emerald diamonds typically cost $39,143 NZD to $199,238 NZD, with a median price of $79,788 NZD. There are currently 21 diamonds matching this specification available across retailers.

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

About 21% of these diamonds are available at multiple retailers, with an average price spread of 52%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI2 Natural Emerald

Quick answer

As of October 2026, there are 21 natural emerald diamonds with I colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $39,143 NZD to $199,238 NZD, with a median of $79,788 NZD. At least 41 retailers stock this exact specification, and 21% of the stones appear at more than one of them, with an average price spread of 52%. Half of all listings fall between $12,556 NZD and $21,776 NZD per carat. The same specification in lab grown form lists at a median of about $512 NZD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +16.6%.

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

$20,321 NZD

Highest Price

$244,712 NZD

Average Price

$100,507 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

21.4%

Price Spread

52.5%

30-Day Price Trend

-2.3%

30-Day Supply Change

+16.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$9,865/ct

10th Percentile

$5,987

Median

$9,865

90th Percentile

$14,054

Score Distribution

110 diamonds scored across 4 quality tiers

Excellent

11 (10.0%)

Very Good

15 (13.6%)

Good

15 (13.6%)

Average

69 (62.7%)

Find Your Diamond

Search 21 I SI2 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 SI2J colour is visually identical to I to the naked eye

Save 42%

Lab-Grown I SI2Same specifications, lab-grown origin

Save 97%

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