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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 HK$839 HKD
$107 USD
As of October 30, 2026
Save HK$2,518 HKD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$8,719 HKD 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: HK$8,719 HKD|Low: HK$808 HKD|High: HK$8,818 HKD|Avg: HK$2,592 HKD|-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 2, 2026
Retailer 6HK$839 HKD
Retailer 10HK$973 HKD
Retailer 7HK$1,114 HKD
Retailer 11HK$1,114 HKD
Retailer 4HK$1,726 HKD
Retailer 2HK$2,075 HKD
Retailer 8HK$2,087 HKD
Retailer 5HK$2,520 HKD
Retailer 3HK$2,817 HKD
Retailer 9HK$3,358 HKD
MOH LondonHK$8,719 HKD

43 data points across 11 retailers

12 retailersHK$839 HKD to HK$3,358 HKD

A
Cheapest Retailer
-
HK$839 HKD
$107 USD
A
Retailer 2
-
HK$973 HKD
$124 USD
View
Retailer 3
-
HK$1,114 HKD
$142 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
HK$1,114 HKD
$142 USD
View
A
Retailer 5
-
HK$1,726 HKD
$220 USD
View
B+
Retailer 6
-
HK$2,075 HKD
£208 GBP
View
B+
Retailer 7
-
HK$2,087 HKD
$266 USD
View
B+
Retailer 8
-
HK$2,520 HKD
£253 GBP
View
B+
Retailer 9
-
HK$2,817 HKD
$359 USD
View
B
Retailer 10
-
HK$3,013 HKD
View
B
Retailer 11
-
HK$3,358 HKD
$428 USD
View
Most Expensive
MOH London
LG541251082 · Nov 1
HK$8,719 HKD
£875 GBP
View
Price under review
11 more retailers have this diamond
Prices start from HK$839 HKDSave up to HK$2,518 HKD

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
HK$839 HKD