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Cushion|Lab Grown|IGI

2.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG653450606

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG653450606

Diamond specifications and retailer prices

From $507 SGD
HK$3,100 HKD
As of October 31, 2026
Save $1,647 SGD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,154 SGD 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG653450606 or 653450606. Listed at 10 retailers as of October 28, 2026, with prices from $507 to $2,154, a $1,647 spread on the same certified stone. Rare Carat lists it at $2,154. 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 angle36.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG653450606
Dimensions8.19 × 8.03 × 5.24 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.19 mm8.03 mm2.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG653450606
Side View
Table 62.0%Crown 36.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 65.3%

Caratlytics Score

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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 31
Current: $2,154 SGD|Low: $507 SGD|High: $4,551 SGD|Avg: $1,637 SGD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 11$507 SGD
Retailer 6$568 SGD
Retailer 8$652 SGD
Retailer 2$734 SGD
Retailer 13$744 SGD
Retailer 7$797 SGD
Retailer 10$840 SGD
Retailer 12$1,044 SGD
Retailer 9$1,822 SGD
Rare Carat$2,154 SGD
Retailer 3$2,194 SGD
Retailer 4$4,070 SGD
Retailer 5$4,551 SGD

4 data points across 13 retailers

10 retailers$507 SGD to $2,154 SGD

A
Cheapest Retailer
-
$507 SGD
HK$3,100 HKD
A
Retailer 2
-
$568 SGD
£350 GBP
View
A
Retailer 3
-
$652 SGD
$510 USD
View
A
Retailer 4
-
$734 SGD
€547 EUR
View
B+
Retailer 5
-
$744 SGD
$582 USD
View
A
Retailer 6
-
$797 SGD
£491 GBP
View
A
Retailer 7
-
$840 SGD
$657 USD
View
A
Retailer 8
-
$1,044 SGD
$817 USD
View
B
Retailer 9
-
$1,822 SGD
£1,122 GBP
View
Most Expensive
B
Rare Carat
KI6064506KF653 · Oct 28
$2,154 SGD
$1,685 USD
View
9 more retailers have this diamond
Prices start from $507 SGDSave up to $1,647 SGD

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
$507 SGD