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Cushion|Lab Grown|IGI

1.57ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG618475823

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG618475823

Diamond specifications and retailer prices

From $325 AUD
$228 USD
As of October 28, 2026
Save $2,337 AUD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,662 AUD at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

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 LG618475823 or 618475823. Listed at 6 retailers as of October 27, 2026, with prices from $325 to $2,662, a $2,337 spread on the same certified stone. Do Amore Diamonds lists it at $2,662. 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 angle36.3°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618475823
Dimensions8.56 × 5.88 × 3.93 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.56 mm5.88 mm1.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618475823
Side View
Table 62.0%Crown 36.3°Girdle: MED-STKPavilion 34.2°Culet: NoneDepth 66.8%

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 28
Current: $2,662 AUD|Low: $209 AUD|High: $2,776 AUD|Avg: $1,348 AUD|-4.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 25, 2026
Retailer 6$325 AUD
Retailer 3$601 AUD
Retailer 4$1,190 AUD
Retailer 2$1,524 AUD
Retailer 5$1,566 AUD
Do Amore Diamonds$2,662 AUD

15 data points across 6 retailers

6 retailers$325 AUD to $2,662 AUD

A
Cheapest Retailer
-
$325 AUD
$228 USD
Final sale: no returns
B+
Retailer 2
-
$601 AUD
$422 USD
View
B+
Retailer 3
-
$1,190 AUD
$836 USD
View
B
Retailer 4
-
$1,524 AUD
£843 GBP
View
B
Retailer 5
-
$1,566 AUD
$1,100 USD
View
Most Expensive
B
Do Amore Diamonds
27-710BE60AC · Oct 27
$2,662 AUD
$1,870 USD
View
5 more retailers have this diamond
Prices start from $325 AUDSave up to $2,337 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
1.57ct Cushion
$325 AUD