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Round|Lab Grown|IGI

1.50ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG478112356

Shape and cutting style on the report: Round brilliant

Certificate IGI LG478112356

Diamond specifications and retailer prices

From $1,186 AUD
As of November 5, 2026
Save $4,689 AUD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,874 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478112356 or 478112356. Listed at 11 retailers as of November 5, 2026, with prices from $1,186 to $5,874, a $4,689 spread on the same certified stone. MOH London lists it at $5,874. 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
J
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478112356
Dimensions7.26 × 7.29 × 4.53 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.26 mm7.29 mm1.50 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478112356
Side View
Table 55.5%Crown 36.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.3%

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 5
Current: $5,874 AUD|Low: $1,186 AUD|High: $5,961 AUD|Avg: $2,603 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 6$1,186 AUD
Retailer 7$1,497 AUD
Retailer 11$1,628 AUD
Retailer 13$1,677 AUD
Retailer 8$1,737 AUD
Retailer 10$1,737 AUD
Retailer 2$2,003 AUD
Retailer 3$2,508 AUD
Retailer 9$2,770 AUD
Retailer 12$3,256 AUD
Retailer 4$3,630 AUD
Retailer 5$3,883 AUD
MOH London$5,874 AUD

40 data points across 13 retailers

11 retailers$1,186 AUD to $5,874 AUD

A
Cheapest Retailer
-
$1,186 AUD
A
Retailer 2
-
$1,497 AUD
View
B+
Retailer 3
-
$1,628 AUD
View
B+
Retailer 4
-
$1,677 AUD
View
Final sale: no returns
B+
Retailer 5
-
$1,737 AUD
View
Retailer 6
-
$1,737 AUD
View
Price last confirmed 25 days ago
B+
Retailer 7
-
$2,003 AUD
View
B
Retailer 8
-
$2,770 AUD
View
B
Retailer 9
-
$3,256 AUD
View
B
Retailer 10
-
$3,630 AUD
View
Most Expensive
B
MOH London
LG478112356 · Nov 5
$5,874 AUD
£3,238 GBP
View
10 more retailers have this diamond
Prices start from $1,186 AUDSave up to $4,689 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
$1,186 AUD