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Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG786634346

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634346

Diamond specifications and retailer prices

From $578 CAD
$414 USD
As of October 29, 2026
Save $2,473 CAD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,051 CAD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG786634346 or 786634346. Listed at 18 retailers as of October 27, 2026, with prices from $578 to $3,051, a $2,473 spread on the same certified stone. Queensmith lists it at $3,051. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634346
Dimensions7.01 × 6.41 × 3.88 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeLarge
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
7.01 mm6.41 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634346
Side View
Table 53.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: LargeDepth 60.5%

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: Oct 29
Current: $2,636 CAD|Low: $556 CAD|High: $2,668 CAD|Avg: $1,366 CAD
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
November 1, 2026
Retailer 11$578 CAD
Retailer 12$647 CAD
Retailer 5$648 CAD
Retailer 3$718 CAD
Retailer 14$718 CAD
Retailer 9$922 CAD
Retailer 13$964 CAD
Retailer 7$1,182 CAD
Retailer 8$1,750 CAD
Retailer 10$2,013 CAD
Retailer 6$2,086 CAD
Retailer 4$2,282 CAD
Retailer 2$2,308 CAD
Retailer 1$2,636 CAD

44 data points across 14 retailers

18 retailers$578 CAD to $3,051 CAD

A
Cheapest Retailer
-
$578 CAD
$414 USD
A
Retailer 2
-
$647 CAD
$463 USD
View
Final sale: no returns
A
Retailer 3
-
$648 CAD
$464 USD
View
A
Retailer 4
-
$718 CAD
$514 USD
View
A
Retailer 5
-
$718 CAD
$514 USD
View
B+
Retailer 6
-
$922 CAD
$660 USD
View
B+
Retailer 7
-
$964 CAD
$690 USD
View
B+
Retailer 8
-
$996 CAD
$713 USD
View
B+
Retailer 9
-
$1,182 CAD
£666 GBP
View
B
Retailer 10
-
$1,750 CAD
A$1,927 AUD
View
B
Retailer 11
-
$2,013 CAD
$1,441 USD
View
B
Retailer 12
-
$2,086 CAD
£1,176 GBP
View
B
Retailer 13
-
$2,282 CAD
SGD 2,208 SGD
View
B
Retailer 14
-
$2,308 CAD
$1,652 USD
View
B
Retailer 15
-
$2,356 CAD
$1,686 USD
View
B
Retailer 16
-
$2,623 CAD
$1,878 USD
View
B
Retailer 17
-
$2,636 CAD
£1,486 GBP
View
Most Expensive
B
Queensmith
LG786634346 · Oct 27
$3,051 CAD
£1,720 GBP
View
17 more retailers have this diamond
Prices start from $578 CADSave up to $2,473 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
1.28ct Cushion
$578 CAD