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Radiant|Lab Grown|IGI

4.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG550260322

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

Certificate IGI LG550260322

Diamond specifications and retailer prices

From $3,189 CAD
$2,283 USD
As of October 24, 2026
3 retailers carry this diamond
Most expensive: $4,295 CAD at MOH London · As of October 21, 2026
View at MOH London

About this 4.21ct lab-grown radiant diamond

This 4.21ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG550260322 or 550260322. Listed at 3 retailers as of October 24, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.21
Carat
H
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.9°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG550260322
Dimensions9.24 × 8.86 × 5.53 mm
L/W Ratio1.04
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
9.24 mm8.86 mm4.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG550260322
Side View
Table 65.0%Crown 38.9°Girdle: Slightly ThickPavilion 31.5°Culet: NoneDepth 62.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 24
Current: $4,295 CAD|Low: $1,482 CAD|High: $4,323 CAD|Avg: $2,841 CAD|-0.7%
MOH London
Retailer 2
Retailer 3
October 18, 2026
Retailer 2$1,517 CAD
Retailer 3$3,189 CAD
MOH London$4,295 CAD

6 data points across 3 retailers

3 retailers

Retailer 1
-
$1,517 CAD
$1,086 USD
Price last confirmed 7 days ago
B
Retailer 2
-
$3,189 CAD
$2,283 USD
View
Most Expensive
MOH London
LG550260322 · Oct 21
$4,295 CAD
£2,421 GBP
View
Price last confirmed 9 days ago
2 more retailers have this diamond
Prices start from $3,189 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.

B
4.21ct Radiant
$3,189 CAD