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Radiant|Lab Grown|IGI

1.50ct I SI1 Radiant Lab Grown Diamond

ID • I/SI1 • IGI LG512224123

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

Certificate IGI LG512224123

Diamond specifications and retailer prices

From $1,087 SGD
$850 USD
As of October 31, 2026
Save $5,088 SGD (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,174 SGD at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512224123 or 512224123. Listed at 11 retailers as of October 31, 2026, with prices from $1,087 to $6,174, a $5,088 spread on the same certified stone. MOH London lists it at $6,174. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle32.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512224123
Dimensions8.32 × 5.59 × 3.63 mm
L/W Ratio1.49
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
8.32 mm5.59 mm1.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512224123
Side View
Table 67.5%Crown 47.1°Girdle: STK-THKPavilion 32.4°Culet: NoneDepth 64.9%

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: Oct 31
Current: $6,174 SGD|Low: $1,087 SGD|High: $6,257 SGD|Avg: $2,759 SGD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 5$1,087 SGD
Retailer 6$1,657 SGD
Retailer 10$1,803 SGD
Retailer 7$1,921 SGD
Retailer 11$1,921 SGD
Retailer 12$2,141 SGD
Retailer 4$2,649 SGD
Retailer 2$2,744 SGD
Retailer 8$3,041 SGD
Retailer 3$3,582 SGD
Retailer 9$3,601 SGD
MOH London$6,174 SGD

22 data points across 12 retailers

11 retailers$1,087 SGD to $6,174 SGD

A
Cheapest Retailer
-
$1,087 SGD
$850 USD
B+
Retailer 2
-
$1,657 SGD
$1,296 USD
View
B+
Retailer 3
-
$1,803 SGD
$1,410 USD
View
Retailer 4
-
$1,921 SGD
$1,503 USD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
$1,921 SGD
$1,503 USD
View
B+
Retailer 6
-
$2,141 SGD
$1,675 USD
View
B+
Retailer 7
-
$2,744 SGD
£1,690 GBP
View
B
Retailer 8
-
$3,041 SGD
$2,379 USD
View
B
Retailer 9
-
$3,582 SGD
$2,802 USD
View
B
Retailer 10
-
$3,601 SGD
$2,817 USD
View
Most Expensive
B
MOH London
LG512224123 · Nov 1
$6,174 SGD
£3,803 GBP
View
10 more retailers have this diamond
Prices start from $1,087 SGDSave up to $5,088 SGD

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 Radiant
$1,087 SGD