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Emerald|Lab Grown|IGI

2.55ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG789628776

Shape and cutting style on the report: Emerald cut

Certificate IGI LG789628776

Diamond specifications and retailer prices

From £354 GBP
$471 USD
As of October 27, 2026
Save £2,477 GBP (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,831 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.55ct lab-grown emerald diamond

This 2.55ct lab-grown emerald sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG789628776 or 789628776. Listed at 15 retailers as of October 27, 2026, with prices from £354 to £2,831, a £2,477 spread on the same certified stone. Brilliant Earth lists it at £2,831. 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

2.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789628776
Dimensions9.12 × 6.28 × 4.45 mm
L/W Ratio1.45
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.12 mm6.28 mm2.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789628776
Side View
Table 65.0%Crown 37.1°Girdle: Slightly ThickPavilion 39.5°Culet: LargeDepth 70.9%

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 27
Current: £2,831 GBP|Low: £339 GBP|High: £3,191 GBP|Avg: £1,006 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 11£354 GBP
Retailer 13£395 GBP
Retailer 5£396 GBP
Retailer 4£439 GBP
Retailer 14£439 GBP
Retailer 9£544 GBP
Retailer 6£646 GBP
Retailer 15£686 GBP
Retailer 2£725 GBP
Retailer 10£1,178 GBP
Retailer 3£1,409 GBP
Retailer 7£1,431 GBP
Retailer 12£1,545 GBP
Retailer 8£1,618 GBP
Brilliant Earth£2,831 GBP

42 data points across 15 retailers

15 retailers£354 GBP to £2,831 GBP

A
Cheapest Retailer
-
£354 GBP
$471 USD
A
Retailer 2
-
£395 GBP
$526 USD
View
Final sale: no returns
A
Retailer 3
-
£396 GBP
$527 USD
View
A
Retailer 4
-
£439 GBP
$584 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£439 GBP
$584 USD
View
A
Retailer 6
-
£544 GBP
$725 USD
View
B+
Retailer 7
-
£646 GBP
$860 USD
View
B
Retailer 8
-
£686 GBP
$913 USD
View
B+
Retailer 9
-
£725 GBP
View
B
Retailer 10
-
£1,178 GBP
$1,569 USD
View
B
Retailer 11
-
£1,409 GBP
$1,876 USD
View
B
Retailer 12
-
£1,431 GBP
$1,906 USD
View
B
Retailer 13
-
£1,545 GBP
$2,057 USD
View
B
Retailer 14
-
£1,618 GBP
View
Most Expensive
B
Brilliant Earth
21067172A · Oct 29
£2,831 GBP
$3,770 USD
View
14 more retailers have this diamond
Prices start from £354 GBPSave up to £2,477 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
2.55ct Emerald
£354 GBP