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Cushion|Lab Grown|IGI

1.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG831623571

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831623571

Diamond specifications and retailer prices

From $282 SGD
$220 USD
As of October 28, 2026
Save $1,653 SGD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,935 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.57ct lab-grown cushion diamond

This 1.57ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831623571 or 831623571. Listed at 13 retailers as of October 28, 2026, with prices from $282 to $1,935, a $1,653 spread on the same certified stone. Brilliant Earth lists it at $1,935. 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

1.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831623571
Dimensions7.65 × 6.13 × 4.09 mm
L/W Ratio1.25
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm6.13 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831623571
Side View
Table 64.0%Crown 33.1°Girdle: STK-VTKPavilion 40.7°Culet: NoneDepth 66.7%

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 28
Current: $1,935 SGD|Low: $261 SGD|High: $1,935 SGD|Avg: $773 SGD|+6.3%
Brilliant Earth
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 30, 2026
Retailer 13$282 SGD
Retailer 11$311 SGD
Retailer 8$401 SGD
Retailer 9$420 SGD
Retailer 6$525 SGD
Retailer 2$569 SGD
Retailer 12$619 SGD
Retailer 10$645 SGD
Retailer 3$1,072 SGD
Retailer 5$1,134 SGD
Retailer 7$1,460 SGD
Retailer 4$1,515 SGD
Brilliant Earth$1,935 SGD

40 data points across 13 retailers

13 retailers$282 SGD to $1,935 SGD

A
Cheapest Retailer
-
$282 SGD
$220 USD
Final sale: no returns
Retailer 2
-
$311 SGD
$243 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$401 SGD
£247 GBP
View
Price last confirmed 13 days ago
B+
Retailer 4
-
$420 SGD
$328 USD
View
A
Retailer 5
-
$525 SGD
€390 EUR
View
A
Retailer 6
-
$569 SGD
£350 GBP
View
A
Retailer 7
-
$619 SGD
$483 USD
View
A
Retailer 8
-
$645 SGD
$503 USD
View
B+
Retailer 9
-
$1,072 SGD
$836 USD
View
Retailer 10
-
$1,134 SGD
$885 USD
View
Price last confirmed 29 days ago
B
Retailer 11
-
$1,460 SGD
£897 GBP
View
B
Retailer 12
-
$1,515 SGD
$1,182 USD
View
Most Expensive
B
Brilliant Earth
21679088A · Oct 29
$1,935 SGD
$1,510 USD
View
12 more retailers have this diamond
Prices start from $282 SGDSave up to $1,653 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
1.57ct Cushion
$282 SGD