How much does a 3.00 to 4.99ct I SI1 lab grown pear diamond cost?

As of October 2026, 3.00 to 4.99ct I SI1 lab grown pear diamonds typically cost £347 GBP to £6,060 GBP, with a median price of £576 GBP. There are currently 6 diamonds matching this specification available across retailers.

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

About 22% of these diamonds are available at multiple retailers, with an average price spread of 78%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI1 Lab Grown Pear

Quick answer

As of October 2026, there are 6 lab grown pear diamonds with I colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £347 GBP to £6,060 GBP, with a median of £576 GBP. At least 26 retailers stock this exact specification, and 22% of the stones appear at more than one of them, with an average price spread of 78%. Half of all listings fall between £200 GBP and £399 GBP per carat. The same specification in natural form lists at a median of about £9,676 GBP per carat. Over the last 30 days the median price moved +3.7% and the number of listings moved +1.4%.

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. Pear lab grown stones in the index: 452 USD per carat, -5.1% 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

£319 GBP

Highest Price

£32,562 GBP

Average Price

£3,998 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

21.7%

Price Spread

78.0%

30-Day Price Trend

+3.7%

30-Day Supply Change

+1.4%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$342/ct

10th Percentile

$194

Median

$342

90th Percentile

$694

Score Distribution

10 diamonds scored across 4 quality tiers

Excellent

4 (40.0%)

Very Good

2 (20.0%)

Good

2 (20.0%)

Average

2 (20.0%)

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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