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 $258 USD
As of October 30, 2026
Save $1,034 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,292 USD 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 10 retailers as of October 29, 2026, with prices from $258 to $1,292, a $1,034 spread on the same certified stone. MOH London lists it at $1,292. 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
Color
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 30
Current: $1,292 USD|Low: $258 USD|High: $3,750 USD|Avg: $1,252 USD
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
Retailer 15
October 30, 2026
Retailer 8$258 USD
Retailer 15$300 USD
Retailer 10$320 USD
Retailer 12$358 USD
Retailer 9$480 USD
Retailer 14$535 USD
Retailer 2$611 USD
Retailer 11$626 USD
Retailer 4$675 USD
Retailer 13$1,030 USD
MOH London$1,292 USD
Retailer 5$1,460 USD
Retailer 7$2,035 USD
Retailer 6$2,948 USD
Retailer 3$3,750 USD

4 data points across 15 retailers

10 retailers$258 USD to $1,292 USD

A
Cheapest Retailer
-
$258 USD
A
Retailer 2
-
$300 USD
View
A
Retailer 3
-
$320 USD
View
A
Retailer 4
-
$358 USD
HK$2,800 HKD
View
A
Retailer 5
-
$480 USD
View
B+
Retailer 6
-
$535 USD
View
A
Retailer 7
-
$611 USD
£481 GBP
View
A
Retailer 8
-
$626 USD
View
B
Retailer 9
-
$1,030 USD
View
Most Expensive
B
MOH London
LG657424855 · Oct 29
$1,292 USD
£1,017 GBP
View
9 more retailers have this diamond
Prices start from $258 USDSave up to $1,034 USD

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
$258 USD