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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG677580013

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

Certificate IGI LG677580013

Diamond specifications and retailer prices

From $284 CAD
As of November 6, 2026
Save $852 CAD (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,649 CAD at MOH London · As of October 25, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG677580013 or 677580013. Listed at 15 retailers as of November 4, 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

1.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677580013
Dimensions6.88 × 4.92 × 3.27 mm
L/W Ratio1.40
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.88 mm4.92 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677580013
Side View
Table 66.0%Crown 37.4°Girdle: STK-THKPavilionCulet: NoneDepth 66.5%

Caratlytics Score

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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 6
Current: $1,649 CAD|Low: $273 CAD|High: $1,667 CAD|Avg: $650 CAD|+4.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 9$284 CAD
Retailer 4$318 CAD
Retailer 14$329 CAD
Retailer 3$352 CAD
Retailer 11$352 CAD
Retailer 5$430 CAD
Retailer 2$454 CAD
Retailer 13$612 CAD
Retailer 7$640 CAD
Retailer 6$684 CAD
Retailer 10$816 CAD
Retailer 12$1,132 CAD
Retailer 8$1,137 CAD
MOH London$1,649 CAD

45 data points across 14 retailers

15 retailers$284 CAD to $1,137 CAD

A
Cheapest Retailer
-
$284 CAD
A
Retailer 2
-
$318 CAD
View
Final sale: no returns
A
Retailer 3
-
$329 CAD
View
A
Retailer 4
-
$352 CAD
View
Retailer 5
-
$352 CAD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$430 CAD
View
A
Retailer 7
-
$454 CAD
View
B+
Retailer 8
-
$612 CAD
View
B+
Retailer 9
-
$640 CAD
View
B+
Retailer 10
-
$684 CAD
View
B+
Retailer 11
-
$702 CAD
View
B+
Retailer 12
-
$816 CAD
View
B
Retailer 13
-
$1,132 CAD
View
B
Retailer 14
-
$1,137 CAD
View
Most Expensive
MOH London
LG677580013 · Oct 25
$1,649 CAD
£923 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $284 CADSave up to $852 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
1.00ct Radiant
$284 CAD