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Cushion|Lab Grown|IGI

1.00ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG818657600

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG818657600

Diamond specifications and retailer prices

From $470 CAD
$336 USD
As of October 28, 2026
Save $2,133 CAD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,603 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818657600 or 818657600. Listed at 13 retailers as of October 28, 2026, with prices from $470 to $2,603, a $2,133 spread on the same certified stone. Brilliant Earth lists it at $2,603. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818657600
Dimensions5.97 × 5.87 × 3.78 mm
L/W Ratio1.02
Girdle conditionFaceted
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
5.97 mm5.87 mm1.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818657600
Side View
Table 59.0%Crown 34.9°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $2,603 CAD|Low: $375 CAD|High: $2,869 CAD|Avg: $1,343 CAD|-9.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 11$470 CAD
Retailer 10$822 CAD
Retailer 4$840 CAD
Retailer 12$851 CAD
Retailer 6$855 CAD
Retailer 8$896 CAD
Retailer 2$922 CAD
Retailer 3$960 CAD
Retailer 13$1,742 CAD
Retailer 5$1,791 CAD
Retailer 7$2,099 CAD
Retailer 9$2,119 CAD
Brilliant Earth$2,603 CAD

34 data points across 13 retailers

13 retailers$470 CAD to $2,603 CAD

A
Cheapest Retailer
-
$470 CAD
$336 USD
Final sale: no returns
A
Retailer 2
-
$822 CAD
$587 USD
View
A
Retailer 3
-
$840 CAD
$600 USD
View
A
Retailer 4
-
$851 CAD
$608 USD
View
A
Retailer 5
-
$855 CAD
€582 EUR
View
A
Retailer 6
-
$896 CAD
ZAR 10,338 ZAR
View
A
Retailer 7
-
$922 CAD
£519 GBP
View
A
Retailer 8
-
$960 CAD
$686 USD
View
B+
Retailer 9
-
$1,742 CAD
$1,245 USD
View
Retailer 10
-
$1,791 CAD
$1,280 USD
View
Price last confirmed 11 days ago
B
Retailer 11
-
$2,099 CAD
£1,181 GBP
View
B
Retailer 12
-
$2,119 CAD
$1,514 USD
View
Most Expensive
B
Brilliant Earth
21241856A · Oct 29
$2,603 CAD
$1,860 USD
View
12 more retailers have this diamond
Prices start from $470 CADSave up to $2,133 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 Cushion
$470 CAD