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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 $458 NZD
$258 USD
As of October 30, 2026
Save $1,834 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,292 NZD 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 $458 to $2,292, a $1,834 spread on the same certified stone. MOH London lists it at $2,292. 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
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 30
Current: $2,292 NZD|Low: $458 NZD|High: $6,654 NZD|Avg: $2,221 NZD
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$458 NZD
Retailer 15$532 NZD
Retailer 10$568 NZD
Retailer 12$636 NZD
Retailer 9$852 NZD
Retailer 14$949 NZD
Retailer 2$1,084 NZD
Retailer 11$1,111 NZD
Retailer 4$1,198 NZD
Retailer 13$1,828 NZD
MOH London$2,292 NZD
Retailer 5$2,591 NZD
Retailer 7$3,611 NZD
Retailer 6$5,230 NZD
Retailer 3$6,654 NZD

4 data points across 15 retailers

10 retailers$458 NZD to $2,292 NZD

A
Cheapest Retailer
-
$458 NZD
$258 USD
A
Retailer 2
-
$532 NZD
$300 USD
View
A
Retailer 3
-
$568 NZD
$320 USD
View
A
Retailer 4
-
$636 NZD
HK$2,800 HKD
View
A
Retailer 5
-
$852 NZD
$480 USD
View
B+
Retailer 6
-
$949 NZD
$535 USD
View
A
Retailer 7
-
$1,084 NZD
£481 GBP
View
A
Retailer 8
-
$1,111 NZD
$626 USD
View
B
Retailer 9
-
$1,828 NZD
$1,030 USD
View
Most Expensive
B
MOH London
LG657424855 · Oct 29
$2,292 NZD
£1,017 GBP
View
9 more retailers have this diamond
Prices start from $458 NZDSave up to $1,834 NZD

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
$458 NZD