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Emerald|Lab Grown|IGI

5.09ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG754565476

Shape and cutting style on the report: Emerald cut

Certificate IGI LG754565476

Diamond specifications and retailer prices

From £428 GBP
$573 USD
As of October 29, 2026
Save £3,453 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,881 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 5.09ct lab-grown emerald diamond

This 5.09ct lab-grown emerald sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754565476 or 754565476. Listed at 18 retailers as of October 29, 2026, with prices from £428 to £3,881, a £3,453 spread on the same certified stone. Brilliant Earth lists it at £3,881. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754565476
Dimensions11.69 × 8.09 × 5.17 mm
L/W Ratio1.44
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.69 mm8.09 mm5.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754565476
Side View
Table 60.0%Crown 31.8°Girdle: Slightly ThickPavilion 38.2°Culet: LargeDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,881 GBP|Low: £411 GBP|High: £4,344 GBP|Avg: £1,156 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 4£411 GBP
Retailer 3£428 GBP
Retailer 11£474 GBP
Retailer 7£511 GBP
Retailer 9£636 GBP
Retailer 5£712 GBP
Retailer 2£732 GBP
Retailer 12£746 GBP
Retailer 8£1,223 GBP
Retailer 10£1,558 GBP
Retailer 6£1,989 GBP
Brilliant Earth£3,881 GBP

41 data points across 12 retailers

18 retailers£428 GBP to £3,881 GBP

Retailer 1
-
£382 GBP
$512 USD
Price last confirmed 38 days ago
Retailer 2
-
£382 GBP
$512 USD
View
Price last confirmed 31 days ago
A
Retailer 3
-
£428 GBP
$573 USD
View
Final sale: no returns
Retailer 4
-
£428 GBP
$573 USD
View
Price last confirmed 35 days ago
Retailer 5
-
£468 GBP
$627 USD
View
Price last confirmed 38 days ago
Retailer 6
-
£468 GBP
$627 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£474 GBP
$635 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
£511 GBP
$685 USD
View
B+
Retailer 9
-
£636 GBP
$852 USD
View
A
Retailer 10
-
£712 GBP
€909 EUR
View
A
Retailer 11
-
£732 GBP
View
A
Retailer 12
-
£746 GBP
$999 USD
View
B+
Retailer 13
-
£1,223 GBP
$1,639 USD
View
Retailer 14
-
£1,246 GBP
$1,670 USD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£1,542 GBP
$2,066 USD
View
B+
Retailer 16
-
£1,558 GBP
$2,088 USD
View
B
Retailer 17
-
£1,989 GBP
View
Most Expensive
B
Brilliant Earth
18620791A · Oct 29
£3,881 GBP
$5,200 USD
View
17 more retailers have this diamond
Prices start from £428 GBPSave up to £3,453 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
5.09ct Emerald
£428 GBP