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Emerald|Lab Grown|IGI

2.57ct E SI1 Emerald Lab Grown Diamond

ID • E/SI1 • IGI LG657424855

Shape and cutting style on the report: Emerald cut

Certificate IGI LG657424855

Diamond specifications and retailer prices

From £225 GBP
$300 USD
As of October 27, 2026
Save £745 GBP (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £970 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.57ct lab-grown emerald diamond

This 2.57ct 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 LG657424855 or 657424855. Listed at 9 retailers as of October 27, 2026, with prices from £225 to £970, a £745 spread on the same certified stone. MOH London lists it at £970. 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

2.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657424855
Dimensions9.49 × 6.36 × 4.38 mm
L/W Ratio1.49
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.49 mm6.36 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657424855
Side View
Table 63.0%Crown 37.1°Girdle: MED-STKPavilion 41.1°Culet: LargeDepth 68.9%

Caratlytics Score

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

Price History

Last verified: Oct 27
Current: £970 GBP|Low: £225 GBP|High: £2,816 GBP|Avg: £987 GBP
MOH London
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
October 29, 2026
Retailer 13£225 GBP
Retailer 8£240 GBP
Retailer 10£269 GBP
Retailer 7£360 GBP
Retailer 12£402 GBP
Retailer 2£458 GBP
Retailer 9£470 GBP
Retailer 3£507 GBP
Retailer 11£773 GBP
MOH London£970 GBP
Retailer 4£1,096 GBP
Retailer 6£1,528 GBP
Retailer 5£2,214 GBP
Retailer 14£2,816 GBP

3 data points across 14 retailers

9 retailers£225 GBP to £970 GBP

A
Cheapest Retailer
-
£225 GBP
$300 USD
A
Retailer 2
-
£240 GBP
$320 USD
View
A
Retailer 3
-
£269 GBP
HK$2,800 HKD
View
A
Retailer 4
-
£360 GBP
$480 USD
View
B+
Retailer 5
-
£402 GBP
$535 USD
View
A
Retailer 6
-
£458 GBP
View
A
Retailer 7
-
£470 GBP
$626 USD
View
B
Retailer 8
-
£773 GBP
$1,030 USD
View
Most Expensive
B
MOH London
LG657424855 · Oct 29
£970 GBP
View
8 more retailers have this diamond
Prices start from £225 GBPSave up to £745 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
2.57ct Emerald
£225 GBP