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Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG783615018

Shape and cutting style on the report: Round brilliant

Certificate IGI LG783615018

Diamond specifications and retailer prices

From $273 AUD
As of November 5, 2026
Save $1,306 AUD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,578 AUD at MOH London · As of November 5, 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 LG783615018 or 783615018. Listed at 17 retailers as of November 5, 2026, with prices from $273 to $1,578, a $1,306 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

1.50
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783615018
Dimensions7.38 × 7.34 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.38 mm7.34 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783615018
Side View
Table 61.0%Crown 34°Girdle: MediumPavilion 41.4°Culet: NoneDepth 60.9%

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: $1,578 AUD|Low: $273 AUD|High: $1,633 AUD|Avg: $700 AUD|-3.0%
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 7$273 AUD
Retailer 3$304 AUD
Retailer 16$317 AUD
Retailer 12$339 AUD
Retailer 8$340 AUD
Retailer 4$593 AUD
Retailer 2$599 AUD
Retailer 9$607 AUD
Retailer 14$639 AUD
Retailer 15$813 AUD
Retailer 10$891 AUD
Retailer 11$979 AUD
Retailer 13$1,089 AUD
Retailer 5$1,104 AUD
Retailer 6$1,164 AUD
MOH London$1,578 AUD

28 data points across 16 retailers

17 retailers$273 AUD to $1,578 AUD

A
Cheapest Retailer
-
$273 AUD
A
Retailer 2
-
$304 AUD
View
Final sale: no returns
A
Retailer 3
-
$317 AUD
View
A
Retailer 4
-
$339 AUD
View
Retailer 5
-
$340 AUD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$593 AUD
View
A
Retailer 7
-
$599 AUD
View
A
Retailer 8
-
$607 AUD
View
A
Retailer 9
-
$639 AUD
View
B+
Retailer 10
-
$813 AUD
View
B+
Retailer 11
-
$891 AUD
View
B+
Retailer 12
-
$979 AUD
View
Retailer 13
-
$1,089 AUD
View
Price last confirmed 46 days ago
B
Retailer 14
-
$1,089 AUD
View
B
Retailer 15
-
$1,104 AUD
View
B+
Retailer 16
-
$1,164 AUD
View
Most Expensive
B
MOH London
LG783615018 · Nov 5
$1,578 AUD
£870 GBP
View
16 more retailers have this diamond
Prices start from $273 AUDSave up to $1,306 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
$273 AUD