Radiant|Lab Grown|IGI

0.42ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG541251082

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

Certificate IGI LG541251082

Diamond specifications and retailer prices

From $149 CAD
$107 USD
As of October 30, 2026
Save $448 CAD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,554 CAD at MOH London · As of October 25, 2026
View at MOH London

About this 0.42ct lab-grown radiant diamond

This 0.42ct lab-grown radiant sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG541251082 or 541251082. Listed at 12 retailers as of October 28, 2026, with a 300% 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

0.42
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541251082
Dimensions5.22 × 3.72 × 2.60 mm
L/W Ratio1.40
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
5.22 mm3.72 mm0.42 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541251082
Side View
Table 68.0%Crown 38.4°Girdle: STK-THKPavilion 36.5°Culet: NoneDepth 69.9%

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 30
Current: $1,554 CAD|Low: $144 CAD|High: $1,570 CAD|Avg: $461 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$149 CAD
Retailer 10$173 CAD
Retailer 7$198 CAD
Retailer 11$198 CAD
Retailer 4$307 CAD
Retailer 2$366 CAD
Retailer 8$372 CAD
Retailer 5$449 CAD
Retailer 3$501 CAD
Retailer 9$598 CAD
MOH London$1,554 CAD

43 data points across 11 retailers

12 retailers$149 CAD to $598 CAD

A
Cheapest Retailer
-
$149 CAD
$107 USD
A
Retailer 2
-
$173 CAD
$124 USD
View
A
Retailer 3
-
$198 CAD
$142 USD
View
A
Retailer 4
-
$198 CAD
$142 USD
View
A
Retailer 5
-
$307 CAD
$220 USD
View
B+
Retailer 6
-
$366 CAD
£206 GBP
View
B+
Retailer 7
-
$372 CAD
$266 USD
View
B+
Retailer 8
-
$449 CAD
£253 GBP
View
B
Retailer 9
-
$501 CAD
$359 USD
View
B+
Retailer 10
-
$536 CAD
HK$3,000 HKD
View
B
Retailer 11
-
$598 CAD
$428 USD
View
Most Expensive
MOH London
LG541251082 · Oct 25
$1,554 CAD
£876 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $149 CADSave up to $448 CAD

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
0.42ct Radiant
$149 CAD