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Cushion|Lab Grown|IGI

2.57ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG641413011

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG641413011

Diamond specifications and retailer prices

From $545 NZD
HK$2,400 HKD
As of October 31, 2026
Save $2,436 NZD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,981 NZD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 2.57ct lab-grown cushion diamond

This 2.57ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG641413011 or 641413011. Listed at 11 retailers as of October 28, 2026, with prices from $545 to $2,981, a $2,436 spread on the same certified stone. Rare Carat lists it at $2,981. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641413011
Dimensions9.31 × 6.91 × 4.67 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.31 mm6.91 mm2.57 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641413011
Side View
Table 63.0%Crown 34.5°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 67.6%

Caratlytics Score

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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 31
Current: $2,981 NZD|Low: $433 NZD|High: $5,412 NZD|Avg: $1,468 NZD|-2.0%
Rare Carat
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 3$433 NZD
Retailer 4$545 NZD
Retailer 6$616 NZD
Retailer 5$781 NZD
Retailer 10$823 NZD
Retailer 7$886 NZD
Retailer 12$1,006 NZD
Retailer 9$1,247 NZD
Retailer 11$1,557 NZD
Retailer 8$1,927 NZD
Retailer 2$2,874 NZD
Rare Carat$2,981 NZD

42 data points across 12 retailers

11 retailers$545 NZD to $2,981 NZD

A
Cheapest Retailer
-
$545 NZD
HK$2,400 HKD
A
Retailer 2
-
$616 NZD
£273 GBP
View
A
Retailer 3
-
$781 NZD
€419 EUR
View
B+
Retailer 4
-
$823 NZD
$464 USD
View
A
Retailer 5
-
$886 NZD
£393 GBP
View
A
Retailer 6
-
$1,006 NZD
$567 USD
View
B+
Retailer 7
-
$1,247 NZD
$703 USD
View
B+
Retailer 8
-
$1,557 NZD
SGD 1,186 SGD
View
B+
Retailer 9
-
$1,927 NZD
£855 GBP
View
B
Retailer 10
-
$2,874 NZD
$1,620 USD
View
Most Expensive
B
Rare Carat
87431-C · Oct 28
$2,981 NZD
$1,680 USD
View
10 more retailers have this diamond
Prices start from $545 NZDSave up to $2,436 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 Cushion
$545 NZD