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Cushion|Lab Grown|IGI

1.03ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG837656490

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG837656490

Diamond specifications and retailer prices

From $305 AUD
$214 USD
As of November 1, 2026
Save $1,274 AUD (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,578 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.03ct lab-grown cushion diamond

This 1.03ct lab-grown cushion sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG837656490 or 837656490. Listed at 7 retailers as of November 1, 2026, with prices from $305 to $1,578, a $1,274 spread on the same certified stone. MOH London lists it at $1,578. 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

1.03
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837656490
Dimensions7.33 × 5.27 × 3.29 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.33 mm5.27 mm1.03 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837656490
Side View
Table 54.0%Crown 39.4°Girdle: MED-STKPavilion 37.3°Culet: LargeDepth 62.4%

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: Nov 1
Current: $1,578 AUD|Low: $305 AUD|High: $1,598 AUD|Avg: $751 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5$305 AUD
Retailer 3$337 AUD
Retailer 6$446 AUD
Retailer 4$456 AUD
Retailer 2$615 AUD
Retailer 7$1,162 AUD
MOH London$1,578 AUD

34 data points across 7 retailers

7 retailers$305 AUD to $1,578 AUD

A
Cheapest Retailer
-
$305 AUD
$214 USD
Final sale: no returns
Retailer 2
-
$337 AUD
$237 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$446 AUD
$313 USD
View
A
Retailer 4
-
$456 AUD
$320 USD
View
B+
Retailer 5
-
$615 AUD
£340 GBP
View
B
Retailer 6
-
$1,162 AUD
$816 USD
View
Most Expensive
B
MOH London
LG837656490 · Nov 1
$1,578 AUD
£873 GBP
View
6 more retailers have this diamond
Prices start from $305 AUDSave up to $1,274 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
1.03ct Cushion
$305 AUD