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Radiant|Lab Grown|IGI

1.28ct H VS1 Radiant Lab Grown Diamond

GD • H/VS1 • IGI LG612329338

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

Certificate IGI LG612329338

Diamond specifications and retailer prices

From $538 CAD
As of November 3, 2026
Save $1,098 CAD (67%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,636 CAD at MOH London · As of November 2, 2026
View at MOH London

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG612329338 or 612329338. Listed at 6 retailers as of November 2, 2026, with prices from $538 to $1,636, a $1,098 spread on the same certified stone. MOH London lists it at $1,636. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
H
Color
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG612329338
Dimensions7.49 × 5.50 × 3.68 mm
L/W Ratio1.36
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
7.49 mm5.50 mm1.28 ctH / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG612329338
Side View
Table 63.0%Crown 41.3°Girdle: MediumPavilion 35.7°Culet: NoneDepth 66.9%

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: Nov 3
Current: $1,636 CAD|Low: $523 CAD|High: $1,656 CAD|Avg: $939 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$538 CAD
Retailer 2$558 CAD
Retailer 3$667 CAD
Retailer 6$739 CAD
Retailer 7$1,083 CAD
Retailer 5$1,365 CAD
MOH London$1,636 CAD

8 data points across 7 retailers

6 retailers$538 CAD to $1,636 CAD

A
Cheapest Retailer
-
$538 CAD
A
Retailer 2
-
$558 CAD
View
B+
Retailer 3
-
$667 CAD
View
Retailer 4
-
$739 CAD
View
Price last confirmed 76 days ago
B
Retailer 5
-
$1,365 CAD
View
Most Expensive
B
MOH London
LG612329338 · Nov 2
$1,636 CAD
£922 GBP
View
5 more retailers have this diamond
Prices start from $538 CADSave up to $1,098 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
1.28ct Radiant
$538 CAD