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Radiant|Lab Grown|IGI

1.00ct E SI2 Radiant Lab Grown Diamond

ID • E/SI2 • IGI LG474115423

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

Certificate IGI LG474115423

Diamond specifications and retailer prices

From $823 CAD
$586 USD
As of October 27, 2026
Save $1,712 CAD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,687 CAD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474115423 or 474115423. Listed at 10 retailers as of October 26, 2026, with a 208% 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

1.00
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.4°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474115423
Dimensions6.25 × 4.79 × 3.45 mm
L/W Ratio1.30
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.25 mm4.79 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474115423
Side View
Table 67.0%Crown 50.4°Girdle: ThickPavilion 30.1°Culet: NoneDepth 72.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $2,687 CAD|Low: $657 CAD|High: $4,488 CAD|Avg: $1,840 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 5$823 CAD
Retailer 8$923 CAD
Retailer 9$923 CAD
Retailer 6$1,021 CAD
Retailer 7$1,569 CAD
Retailer 2$1,587 CAD
Retailer 4$2,535 CAD
NZ Jewellers$2,687 CAD
Retailer 3$4,440 CAD

40 data points across 9 retailers

10 retailers$823 CAD to $2,535 CAD

B+
Cheapest Retailer
-
$823 CAD
$586 USD
B
Retailer 2
-
$923 CAD
$657 USD
View
Final sale: no returns
B
Retailer 3
-
$923 CAD
$657 USD
View
B
Retailer 4
-
$1,021 CAD
$727 USD
View
Price last confirmed 13 days ago
B
Retailer 5
-
$1,021 CAD
$727 USD
View
B
Retailer 6
-
$1,569 CAD
$1,117 USD
View
B
Retailer 7
-
$1,587 CAD
£890 GBP
View
B
Retailer 8
-
$2,535 CAD
$1,805 USD
View
Most Expensive
B
NZ Jewellers
2c24565e-93cb-4cc9-972a-0da2494af1a8 · Oct 28
$2,687 CAD
$1,913 USD
View
Price under review
8 more retailers have this diamond
Prices start from $823 CADSave up to $1,712 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+
1.00ct Radiant
$823 CAD