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Cushion|Lab Grown|IGI

1.57ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG425067660

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG425067660

Diamond specifications and retailer prices

From $1,253 AUD
$880 USD
As of October 31, 2026
Save $5,936 AUD (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,188 AUD at MOH London · As of November 1, 2026
View at MOH London

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 LG425067660 or 425067660. Listed at 6 retailers as of October 31, 2026, with prices from $1,253 to $7,188, a $5,936 spread on the same certified stone. MOH London lists it at $7,188. 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
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle42.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG425067660
Dimensions7.18 × 6.73 × 4.55 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.18 mm6.73 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG425067660
Side View
Table 58.0%Crown 35°Girdle: STK-THKPavilion 42.5°Culet: NoneDepth 67.6%

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: Oct 31
Current: $7,188 AUD|Low: $1,253 AUD|High: $7,286 AUD|Avg: $3,549 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2$1,253 AUD
Retailer 5$2,158 AUD
Retailer 3$2,238 AUD
Retailer 6$2,484 AUD
Retailer 9$2,844 AUD
Retailer 7$3,071 AUD
Retailer 4$3,536 AUD
Retailer 8$6,407 AUD
MOH London$7,188 AUD

14 data points across 9 retailers

6 retailers$1,253 AUD to $7,188 AUD

A
Cheapest Retailer
-
$1,253 AUD
$880 USD
B
Retailer 2
-
$2,158 AUD
$1,516 USD
View
Final sale: no returns
Retailer 3
-
$2,238 AUD
$1,572 USD
View
Price last confirmed 20 days ago
B
Retailer 4
-
$2,484 AUD
$1,745 USD
View
B
Retailer 5
-
$3,536 AUD
$2,484 USD
View
Most Expensive
B
MOH London
LG425067660 · Nov 1
$7,188 AUD
£3,976 GBP
View
5 more retailers have this diamond
Prices start from $1,253 AUDSave up to $5,936 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
$1,253 AUD