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Cushion|Lab Grown|IGI

1.28ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG843667683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843667683

Diamond specifications and retailer prices

From $581 CAD
£327 GBP
As of October 30, 2026
Save $3,065 CAD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,646 CAD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG843667683 or 843667683. Listed at 11 retailers as of October 30, 2026, with prices from $581 to $3,646, a $3,065 spread on the same certified stone. Do Amore Diamonds lists it at $3,646. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle31.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843667683
Dimensions8.53 × 5.37 × 3.53 mm
L/W Ratio1.59
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
8.53 mm5.37 mm1.28 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843667683
Side View
Table 57.0%Crown 33.9°Girdle: MED-STKPavilion 31.6°Culet: NoneDepth 65.7%

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 30
Current: $3,646 CAD|Low: $508 CAD|High: $4,456 CAD|Avg: $1,847 CAD|-18.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$581 CAD
Retailer 10$726 CAD
Retailer 11$834 CAD
Retailer 2$930 CAD
Retailer 3$960 CAD
Retailer 8$1,366 CAD
Retailer 9$2,144 CAD
Retailer 7$2,265 CAD
Retailer 4$2,487 CAD
Retailer 5$2,626 CAD
Do Amore Diamonds$3,646 CAD

17 data points across 11 retailers

11 retailers$581 CAD to $3,646 CAD

A
Cheapest Retailer
-
$581 CAD
£327 GBP
A
Retailer 2
-
$726 CAD
$520 USD
View
A
Retailer 3
-
$834 CAD
$597 USD
View
A
Retailer 4
-
$930 CAD
€634 EUR
View
A
Retailer 5
-
$960 CAD
$687 USD
View
A
Retailer 6
-
$1,366 CAD
A$1,504 AUD
View
B+
Retailer 7
-
$2,144 CAD
$1,535 USD
View
B+
Retailer 8
-
$2,265 CAD
£1,277 GBP
View
B
Retailer 9
-
$2,487 CAD
A$2,739 AUD
View
B+
Retailer 10
-
$2,626 CAD
$1,880 USD
View
Most Expensive
B
Do Amore Diamonds
27-5C60E91B3 · Oct 31
$3,646 CAD
$2,610 USD
View
10 more retailers have this diamond
Prices start from $581 CADSave up to $3,065 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
$581 CAD