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Cushion|Lab Grown|IGI

1.55ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG674547147

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG674547147

Diamond specifications and retailer prices

From $314 CAD
$225 USD
As of November 1, 2026
Save $1,360 CAD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,674 CAD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674547147 or 674547147. Listed at 15 retailers as of November 1, 2026, with prices from $314 to $1,674, a $1,360 spread on the same certified stone. Reve Diamonds lists it at $1,674. 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

1.55
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674547147
Dimensions6.81 × 6.48 × 4.48 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.48 mm1.55 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674547147
Side View
Table 62.0%Crown 36.1°Girdle: MED-STKPavilion 42°Culet: NoneDepth 69.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $447 CAD|Low: $314 CAD|High: $1,652 CAD|Avg: $848 CAD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$314 CAD
Retailer 8$393 CAD
Retailer 1$447 CAD
Retailer 2$496 CAD
Retailer 4$571 CAD
Retailer 3$641 CAD
Retailer 9$900 CAD
Retailer 10$1,341 CAD
Retailer 5$1,355 CAD
Retailer 7$1,641 CAD

40 data points across 10 retailers

15 retailers$314 CAD to $1,674 CAD

A
Cheapest Retailer
-
$314 CAD
$225 USD
Final sale: no returns
A
Retailer 2
-
$393 CAD
HK$2,200 HKD
View
A
Retailer 3
-
$447 CAD
£252 GBP
View
B+
Retailer 4
-
$496 CAD
$355 USD
View
A
Retailer 5
-
$571 CAD
€389 EUR
View
A
Retailer 6
-
$641 CAD
£361 GBP
View
A
Retailer 7
-
$693 CAD
$496 USD
View
Retailer 8
-
$900 CAD
$644 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$1,137 CAD
SGD 1,100 SGD
View
B+
Retailer 10
-
$1,197 CAD
$857 USD
View
B+
Retailer 11
-
$1,341 CAD
$960 USD
View
B+
Retailer 12
-
$1,355 CAD
$970 USD
View
B
Retailer 13
-
$1,509 CAD
$1,080 USD
View
B
Retailer 14
-
$1,641 CAD
£925 GBP
View
Most Expensive
B
Reve Diamonds
EF5D41078 · Nov 1
$1,674 CAD
$1,199 USD
View
14 more retailers have this diamond
Prices start from $314 CADSave up to $1,360 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
1.55ct Cushion
$314 CAD