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Cushion|Lab Grown|IGI

1.57ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG587320952

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG587320952

Diamond specifications and retailer prices

From $458 AUD
$322 USD
As of November 1, 2026
Save $1,449 AUD (76%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,908 AUD at Do Amore Diamonds · As of November 2, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG587320952 or 587320952. Listed at 5 retailers as of November 1, 2026, with prices from $458 to $1,908, a $1,449 spread on the same certified stone. Do Amore Diamonds lists it at $1,908. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG587320952
Dimensions6.79 × 6.73 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
6.79 mm6.73 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG587320952
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
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: Nov 1
Current: $1,908 AUD|Low: $451 AUD|High: $2,164 AUD|Avg: $1,339 AUD|-6.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 4$458 AUD
Retailer 5$946 AUD
Retailer 2$1,224 AUD
Retailer 3$1,269 AUD
Do Amore Diamonds$1,908 AUD

9 data points across 5 retailers

5 retailers$458 AUD to $1,908 AUD

B+
Cheapest Retailer
-
$458 AUD
$322 USD
A
Retailer 2
-
$946 AUD
$664 USD
View
B+
Retailer 3
-
$1,224 AUD
$860 USD
View
B+
Retailer 4
-
$1,269 AUD
£702 GBP
View
Most Expensive
B
Do Amore Diamonds
27-1E583C975 · Nov 2
$1,908 AUD
$1,340 USD
View
4 more retailers have this diamond
Prices start from $458 AUDSave up to $1,449 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
$458 AUD