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Radiant|Lab Grown|IGI

1.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG778660444

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

Certificate IGI LG778660444

Diamond specifications and retailer prices

From $278 AUD
As of November 6, 2026
Save $1,330 AUD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,608 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778660444 or 778660444. Listed at 16 retailers as of November 5, 2026, with prices from $278 to $1,608, a $1,330 spread on the same certified stone. MOH London lists it at $1,608. 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

1.50
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778660444
Dimensions8.24 × 5.72 × 3.74 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.72 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778660444
Side View
Table 65.0%Crown 38.9°Girdle: Slightly ThickPavilion 33.7°Culet: NoneDepth 65.4%

Caratlytics Score

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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 6
Current: $1,608 AUD|Low: $271 AUD|High: $1,651 AUD|Avg: $827 AUD|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$278 AUD
Retailer 16$310 AUD
Retailer 12$323 AUD
Retailer 7$345 AUD
Retailer 8$346 AUD
Retailer 4$604 AUD
Retailer 2$620 AUD
Retailer 14$683 AUD
Retailer 15$828 AUD
Retailer 11$897 AUD
Retailer 10$1,048 AUD
Retailer 13$1,109 AUD
Retailer 5$1,125 AUD
Retailer 6$1,186 AUD
Retailer 9$1,499 AUD
MOH London$1,608 AUD

34 data points across 16 retailers

16 retailers$278 AUD to $1,608 AUD

A
Cheapest Retailer
-
$278 AUD
A
Retailer 2
-
$310 AUD
View
Final sale: no returns
A
Retailer 3
-
$323 AUD
View
A
Retailer 4
-
$345 AUD
View
Retailer 5
-
$346 AUD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$604 AUD
View
A
Retailer 7
-
$620 AUD
View
A
Retailer 8
-
$683 AUD
View
A
Retailer 9
-
$828 AUD
View
B+
Retailer 10
-
$897 AUD
View
B+
Retailer 11
-
$1,048 AUD
View
B+
Retailer 12
-
$1,109 AUD
View
B+
Retailer 13
-
$1,125 AUD
View
B+
Retailer 14
-
$1,186 AUD
View
B
Retailer 15
-
$1,499 AUD
View
Most Expensive
B
MOH London
LG778660444 · Nov 5
$1,608 AUD
£870 GBP
View
15 more retailers have this diamond
Prices start from $278 AUDSave up to $1,330 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
1.50ct Radiant
$278 AUD