Radiant|Lab Grown|IGI

4.05ct E SI2 Radiant Lab Grown Diamond

VG • E/SI2 • IGI LG851625454

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

Certificate IGI LG851625454

Diamond specifications and retailer prices

From $1,312 CAD
$939 USD
As of October 30, 2026
Save $534 CAD (29%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,845 CAD at Adiamor · As of October 31, 2026
View at Adiamor

About this 4.05ct lab-grown radiant diamond

This 4.05ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG851625454 or 851625454. Listed at 3 retailers as of October 30, 2026, with prices from $1,312 to $1,845, a $534 spread on the same certified stone. Adiamor lists it at $1,845. 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

4.05
Carat
E
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.6°
Pavilion angle32.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851625454
Dimensions11.35 × 7.54 × 5.13 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.35 mm7.54 mm4.05 ctE / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851625454
Side View
Table 63.0%Crown 30.6°Girdle: STK-THKPavilion 32.2°Culet: NoneDepth 68.0%

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: $1,845 CAD|Low: $1,312 CAD|High: $1,845 CAD|Avg: $1,477 CAD
Adiamor
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$1,312 CAD
Retailer 2$1,400 CAD
Adiamor$1,845 CAD

3 data points across 3 retailers

3 retailers$1,312 CAD to $1,845 CAD

B+
Cheapest Retailer
-
$1,312 CAD
$939 USD
A
Retailer 2
-
$1,400 CAD
£789 GBP
View
Most Expensive
B+
Adiamor
D-82884235 · Oct 31
$1,845 CAD
$1,321 USD
View
2 more retailers have this diamond
Prices start from $1,312 CADSave up to $534 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
4.05ct Radiant
$1,312 CAD