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Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG640450758

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG640450758

Diamond specifications and retailer prices

From $652 CAD
€444 EUR
As of October 23, 2026
Save $1,671 CAD (72%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,684 CAD at Queensmith · As of October 22, 2026
View at Queensmith

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG640450758 or 640450758. Listed at 16 retailers as of October 23, 2026, with a 256% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.7°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640450758
Dimensions5.55 × 5.55 × 3.51 mm
L/W Ratio1.00
Girdle conditionFaceted
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
5.55 mm5.55 mm1.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640450758
Side View
Table 57.0%Crown 28.7°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 63.2%

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: Oct 23
Current: $662 CAD|Low: $353 CAD|High: $2,323 CAD|Avg: $1,100 CAD|-15.7%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 23, 2026
Retailer 5$353 CAD
Retailer 8$430 CAD
Retailer 19$535 CAD
Retailer 15$652 CAD
Retailer 1$662 CAD
Retailer 10$700 CAD
Retailer 12$705 CAD
Retailer 18$719 CAD
Retailer 3$851 CAD
Retailer 16$963 CAD
Retailer 6$1,057 CAD
Retailer 4$1,332 CAD
Retailer 7$1,352 CAD
Retailer 17$1,431 CAD
Retailer 13$1,577 CAD
Retailer 2$1,785 CAD
Retailer 14$1,819 CAD
Retailer 11$1,856 CAD
Retailer 9$2,323 CAD

35 data points across 19 retailers

16 retailers$652 CAD to $2,323 CAD

Retailer 1
-
$430 CAD
HK$2,400 HKD
Price last confirmed 24 days ago
Retailer 2
-
$535 CAD
$382 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$652 CAD
€444 EUR
View
A
Retailer 4
-
$662 CAD
ZAR 7,642 ZAR
View
A
Retailer 5
-
$705 CAD
£397 GBP
View
Retailer 6
-
$719 CAD
$514 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$851 CAD
$608 USD
View
Retailer 8
-
$963 CAD
A$1,059 AUD
View
Price last confirmed 12 days ago
Retailer 9
-
$1,057 CAD
SGD 1,021 SGD
View
Price last confirmed 23 days ago
Retailer 10
-
$1,332 CAD
$952 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$1,431 CAD
A$1,573 AUD
View
Price last confirmed 22 days ago
Retailer 12
-
$1,577 CAD
£887 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$1,785 CAD
$1,275 USD
View
Retailer 14
-
$1,819 CAD
$1,300 USD
View
Price last confirmed 11 days ago
B
Retailer 15
-
$2,323 CAD
$1,660 USD
View
Most Expensive
Queensmith
LG640450758 · Oct 22
$2,684 CAD
£1,510 GBP
View
Price last confirmed 7 days ago
15 more retailers have this diamond
Prices start from $652 CADSave up to $1,671 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
1.05ct Cushion
$652 CAD