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Round|Lab Grown|IGI

1.50ct G SI1 Round Lab Grown Diamond

EX • G/SI1 • IGI LG818686782

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686782

Diamond specifications and retailer prices

From $285 AUD
$200 USD
As of November 1, 2026
Save $1,377 AUD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,662 AUD at MOH London · As of October 29, 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 LG818686782 or 818686782. Listed at 15 retailers as of October 29, 2026, with prices from $285 to $1,662, a $1,377 spread on the same certified stone. MOH London lists it at $1,662. 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 angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686782
Dimensions7.43 × 7.38 × 4.43 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
7.43 mm7.38 mm1.50 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686782
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.8%

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: $1,662 AUD|Low: $285 AUD|High: $1,672 AUD|Avg: $852 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$285 AUD
Retailer 11$353 AUD
Retailer 2$590 AUD
Retailer 12$614 AUD
Retailer 5$629 AUD
Retailer 4$642 AUD
Retailer 6$646 AUD
Retailer 8$910 AUD
Retailer 7$1,018 AUD
Retailer 10$1,210 AUD
Retailer 3$1,212 AUD
MOH London$1,662 AUD

44 data points across 12 retailers

15 retailers$285 AUD to $1,662 AUD

A
Cheapest Retailer
-
$285 AUD
$200 USD
A
Retailer 2
-
$330 AUD
$232 USD
View
Retailer 3
-
$353 AUD
$248 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$353 AUD
$248 USD
View
A
Retailer 5
-
$590 AUD
€395 EUR
View
B+
Retailer 6
-
$614 AUD
$431 USD
View
A
Retailer 7
-
$629 AUD
£348 GBP
View
B+
Retailer 8
-
$642 AUD
$451 USD
View
A
Retailer 9
-
$646 AUD
£357 GBP
View
B+
Retailer 10
-
$910 AUD
$639 USD
View
B+
Retailer 11
-
$1,018 AUD
$715 USD
View
B
Retailer 12
-
$1,136 AUD
$798 USD
View
B
Retailer 13
-
$1,210 AUD
$850 USD
View
B
Retailer 14
-
$1,212 AUD
$851 USD
View
Most Expensive
B
MOH London
LG818686782 · Oct 29
$1,662 AUD
£919 GBP
View
14 more retailers have this diamond
Prices start from $285 AUDSave up to $1,377 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
$285 AUD