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Radiant|Lab Grown|IGI

1.03ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG578349881

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG578349881

Diamond specifications and retailer prices

From $850 AUD
As of November 5, 2026
7 retailers carry this diamond
Most expensive: $1,220 AUD at MOH London · As of October 15, 2026
View at MOH London

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant 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 LG578349881 or 578349881. Listed at 7 retailers as of November 5, 2026. 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 angle41.1°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578349881
Dimensions7.28 × 4.92 × 3.27 mm
L/W Ratio1.48
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
7.28 mm4.92 mm1.03 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578349881
Side View
Table 60.0%Crown 41.1°Girdle: MediumPavilion 33.2°Culet: NoneDepth 66.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $1,220 AUD|Low: $180 AUD|High: $2,023 AUD|Avg: $739 AUD|+3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 17, 2026
Retailer 8$189 AUD
Retailer 10$211 AUD
Retailer 11$378 AUD
Retailer 6$429 AUD
Retailer 4$556 AUD
Retailer 12$607 AUD
Retailer 3$683 AUD
Retailer 5$795 AUD
Retailer 9$800 AUD
Retailer 7$898 AUD
MOH London$1,220 AUD
Retailer 2$2,023 AUD

15 data points across 12 retailers

7 retailers

Retailer 1
-
$189 AUD
Price last confirmed 30 days ago
Retailer 2
-
$218 AUD
View
Price last confirmed 24 days ago
Retailer 3
-
$429 AUD
View
Price last confirmed 22 days ago
Retailer 4
-
$800 AUD
View
Price last confirmed 23 days ago
Retailer 5
-
$830 AUD
View
Price last confirmed 38 days ago
B
Retailer 6
-
$850 AUD
View
Most Expensive
MOH London
LG578349881 · Oct 15
$1,220 AUD
£660 GBP
View
Price last confirmed 22 days ago
6 more retailers have this diamond
Prices start from $850 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.

B
1.03ct Radiant
$850 AUD