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 €96 EUR
$107 USD
As of October 30, 2026
Save €287 EUR (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €995 EUR at MOH London · As of November 1, 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 30, 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: €995 EUR|Low: €92 EUR|High: €1,006 EUR|Avg: €296 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6€96 EUR
Retailer 10€111 EUR
Retailer 7€127 EUR
Retailer 11€127 EUR
Retailer 4€197 EUR
Retailer 2€237 EUR
Retailer 8€238 EUR
Retailer 5€288 EUR
Retailer 3€321 EUR
Retailer 9€383 EUR
MOH London€995 EUR

43 data points across 11 retailers

12 retailers€96 EUR to €383 EUR

A
Cheapest Retailer
-
€96 EUR
$107 USD
A
Retailer 2
-
€111 EUR
$124 USD
View
Retailer 3
-
€127 EUR
$142 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€127 EUR
$142 USD
View
A
Retailer 5
-
€197 EUR
$220 USD
View
B+
Retailer 6
-
€237 EUR
£208 GBP
View
B+
Retailer 7
-
€238 EUR
$266 USD
View
B+
Retailer 8
-
€288 EUR
£253 GBP
View
B+
Retailer 9
-
€321 EUR
$359 USD
View
B
Retailer 10
-
€344 EUR
HK$3,000 HKD
View
B
Retailer 11
-
€383 EUR
$428 USD
View
Most Expensive
MOH London
LG541251082 · Nov 1
€995 EUR
£875 GBP
View
Price under review
11 more retailers have this diamond
Prices start from €96 EURSave up to €287 EUR

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
€96 EUR