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Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG804642988

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804642988

Diamond specifications and retailer prices

From $286 AUD
As of November 5, 2026
Save $1,372 AUD (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,658 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round 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 LG804642988 or 804642988. Listed at 16 retailers as of November 2, 2026, with prices from $286 to $1,658, a $1,372 spread on the same certified stone. MOH London lists it at $1,658. 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 angle33.2°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804642988
Dimensions7.45 × 7.38 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.45 mm7.38 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804642988
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.7%

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 5
Current: $1,658 AUD|Low: $286 AUD|High: $1,678 AUD|Avg: $818 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$286 AUD
Retailer 8$354 AUD
Retailer 2$600 AUD
Retailer 9$616 AUD
Retailer 5$641 AUD
Retailer 10$720 AUD
Retailer 6$1,000 AUD
Retailer 3$1,143 AUD
Retailer 4$1,214 AUD
MOH London$1,658 AUD

42 data points across 10 retailers

16 retailers$286 AUD to $1,658 AUD

A
Cheapest Retailer
-
$286 AUD
A
Retailer 2
-
$331 AUD
View
Retailer 3
-
$354 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$354 AUD
View
A
Retailer 5
-
$600 AUD
View
B+
Retailer 6
-
$616 AUD
View
A
Retailer 7
-
$641 AUD
View
A
Retailer 8
-
$644 AUD
View
B+
Retailer 9
-
$720 AUD
View
B+
Retailer 10
-
$1,000 AUD
View
Retailer 11
-
$1,029 AUD
View
Price last confirmed 19 days ago
B+
Retailer 12
-
$1,140 AUD
View
B
Retailer 13
-
$1,143 AUD
View
B
Retailer 14
-
$1,214 AUD
View
B
Retailer 15
-
$1,216 AUD
View
Most Expensive
B
MOH London
LG804642988 · Nov 2
$1,658 AUD
£914 GBP
View
15 more retailers have this diamond
Prices start from $286 AUDSave up to $1,372 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 Round
$286 AUD