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Cushion|Lab Grown|IGI

1.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG790683937

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG790683937

Diamond specifications and retailer prices

From $1,658 CAD
$1,187 USD
As of October 29, 2026
Save $5,081 CAD (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,739 CAD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790683937 or 790683937. Listed at 13 retailers as of October 29, 2026, with prices from $1,658 to $6,739, a $5,081 spread on the same certified stone. Taylor and Hart lists it at $6,739. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790683937
Dimensions7.82 × 5.78 × 3.53 mm
L/W Ratio1.35
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
7.82 mm5.78 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790683937
Side View
Table 58.0%Crown 37.4°Girdle: MED-THKPavilion 38.5°Culet: LargeDepth 61.1%

Caratlytics Score

How it works →
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: $2,785 CAD|Low: $1,592 CAD|High: $6,264 CAD|Avg: $2,916 CAD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9$1,658 CAD
Retailer 3$1,805 CAD
Retailer 2$1,924 CAD
Retailer 10$1,924 CAD
Retailer 8$2,006 CAD
Retailer 5$2,165 CAD
Retailer 6$2,752 CAD
Retailer 1$2,785 CAD
Retailer 12$3,605 CAD
Retailer 11$3,685 CAD
Retailer 4$4,641 CAD
Retailer 7$6,190 CAD

43 data points across 12 retailers

13 retailers$1,658 CAD to $6,739 CAD

A
Cheapest Retailer
-
$1,658 CAD
$1,187 USD
B+
Retailer 2
-
$1,805 CAD
$1,292 USD
View
Retailer 3
-
$1,924 CAD
$1,377 USD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
$1,924 CAD
$1,377 USD
View
B+
Retailer 5
-
$2,006 CAD
$1,436 USD
View
Final sale: no returns
B+
Retailer 6
-
$2,165 CAD
$1,550 USD
View
B+
Retailer 7
-
$2,752 CAD
$1,970 USD
View
B+
Retailer 8
-
$2,785 CAD
£1,570 GBP
View
B
Retailer 9
-
$3,605 CAD
$2,581 USD
View
B
Retailer 10
-
$3,685 CAD
$2,638 USD
View
B
Retailer 11
-
$4,641 CAD
£2,616 GBP
View
B
Retailer 12
-
$6,190 CAD
£3,489 GBP
View
Most Expensive
B
Taylor and Hart
3KZQ333 · Oct 30
$6,739 CAD
$4,824 USD
View
12 more retailers have this diamond
Prices start from $1,658 CADSave up to $5,081 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
$1,658 CAD