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Radiant|Lab Grown|IGI

1.50ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG474113844

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

Certificate IGI LG474113844

Diamond specifications and retailer prices

From $1,127 AUD
$792 USD
As of October 30, 2026
Save $1,774 AUD (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,610 AUD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474113844 or 474113844. Listed at 6 retailers as of October 29, 2026, with a 157% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474113844
Dimensions6.59 × 6.34 × 3.95 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.59 mm6.34 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474113844
Side View
Table 59.0%Crown 39.5°Girdle: Slightly ThickPavilion 31.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,610 AUD|Low: $806 AUD|High: $4,640 AUD|Avg: $2,603 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 5$1,127 AUD
Retailer 3$1,805 AUD
Retailer 4$1,897 AUD
Retailer 2$1,900 AUD
MOH London$4,610 AUD

17 data points across 5 retailers

6 retailers$1,127 AUD to $2,901 AUD

B+
Cheapest Retailer
-
$1,127 AUD
$792 USD
Final sale: no returns
Retailer 2
-
$1,805 AUD
€1,208 EUR
View
Price last confirmed 7 days ago
B
Retailer 3
-
$1,897 AUD
$1,333 USD
View
B
Retailer 4
-
$1,900 AUD
$1,335 USD
View
B
Retailer 5
-
$2,901 AUD
£1,605 GBP
View
Most Expensive
MOH London
LG474113844 · Oct 29
$4,610 AUD
£2,550 GBP
View
Price under review
5 more retailers have this diamond
Prices start from $1,127 AUDSave up to $1,774 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.

B+
1.50ct Radiant
$1,127 AUD