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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 $347 AUD
$244 USD
As of October 27, 2026
Save $3,994 AUD (92%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,341 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 12 retailers as of October 27, 2026, with prices from $347 to $4,341, a $3,994 spread on the same certified stone. Brilliant Earth lists it at $4,341. 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

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: $4,341 AUD|Low: $347 AUD|High: $4,341 AUD|Avg: $1,182 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3$347 AUD
Retailer 4$437 AUD
Retailer 5$494 AUD
Retailer 2$626 AUD
Retailer 10$660 AUD
Retailer 6$711 AUD
Retailer 12$807 AUD
Retailer 9$1,001 AUD
Retailer 11$1,249 AUD
Retailer 7$1,546 AUD
Retailer 8$2,391 AUD
Brilliant Earth$4,341 AUD

41 data points across 12 retailers

12 retailers$347 AUD to $4,341 AUD

A
Cheapest Retailer
-
$347 AUD
$244 USD
Final sale: no returns
A
Retailer 2
-
$437 AUD
HK$2,400 HKD
View
A
Retailer 3
-
$494 AUD
£273 GBP
View
A
Retailer 4
-
$626 AUD
€419 EUR
View
B+
Retailer 5
-
$660 AUD
$464 USD
View
A
Retailer 6
-
$711 AUD
£393 GBP
View
A
Retailer 7
-
$807 AUD
$567 USD
View
A
Retailer 8
-
$1,001 AUD
$703 USD
View
B+
Retailer 9
-
$1,249 AUD
SGD 1,186 SGD
View
B+
Retailer 10
-
$1,546 AUD
£855 GBP
View
B
Retailer 11
-
$2,391 AUD
$1,680 USD
View
Most Expensive
B
Brilliant Earth
14415953A · Oct 29
$4,341 AUD
$3,050 USD
View
11 more retailers have this diamond
Prices start from $347 AUDSave up to $3,994 AUD

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
$347 AUD