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Cushion|Lab Grown|IGI

1.80ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG816655806

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

Certificate IGI LG816655806

Diamond specifications and retailer prices

From $856 CAD
$613 USD
As of October 30, 2026
Save $3,055 CAD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,911 CAD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.8ct lab-grown cushion diamond

This 1.8ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816655806 or 816655806. Listed at 7 retailers as of October 30, 2026, with prices from $856 to $3,911, a $3,055 spread on the same certified stone. Brilliant Earth lists it at $3,911. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.80
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816655806
Dimensions6.84 × 6.77 × 4.63 mm
L/W Ratio1.01
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
6.84 mm6.77 mm1.80 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816655806
Side View
Table 59.0%Crown 34.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
A+
Exceptional
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 30
Current: $3,911 CAD|Low: $856 CAD|High: $4,149 CAD|Avg: $1,862 CAD|-5.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 3$856 CAD
Retailer 5$902 CAD
Retailer 6$1,014 CAD
Retailer 2$1,328 CAD
Retailer 4$2,113 CAD
Retailer 7$3,087 CAD
Brilliant Earth$3,911 CAD

26 data points across 7 retailers

7 retailers$856 CAD to $3,911 CAD

A+
Cheapest Retailer
-
$856 CAD
$613 USD
A
Retailer 2
-
$902 CAD
$646 USD
View
A
Retailer 3
-
$1,014 CAD
€691 EUR
View
A
Retailer 4
-
$1,328 CAD
$951 USD
View
A
Retailer 5
-
$2,113 CAD
£1,191 GBP
View
B+
Retailer 6
-
$3,087 CAD
$2,210 USD
View
Most Expensive
B+
Brilliant Earth
20577045A · Oct 30
$3,911 CAD
$2,800 USD
View
6 more retailers have this diamond
Prices start from $856 CADSave up to $3,055 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+
1.80ct Cushion
$856 CAD