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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

VG • D/VS1 • IGI LG770608936

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG770608936

Diamond specifications and retailer prices

From $348 CAD
$249 USD
As of October 30, 2026
Save $1,423 CAD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,771 CAD at Reve Diamonds · As of October 30, 2026
View at Reve 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG770608936 or 770608936. Listed at 19 retailers as of October 30, 2026, with prices from $348 to $1,771, a $1,423 spread on the same certified stone. Reve Diamonds lists it at $1,771. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770608936
Dimensions5.40 × 5.40 × 3.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.40 mm5.40 mm1.28 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770608936
Side View
Table 63.0%Crown 39.7°Girdle: STK-VTKPavilion 34.1°Culet: NoneDepth 69.3%

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 30
Current: $720 CAD|Low: $348 CAD|High: $1,634 CAD|Avg: $855 CAD|+4.6%
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
October 31, 2026
Retailer 5$348 CAD
Retailer 12$387 CAD
Retailer 2$520 CAD
Retailer 7$626 CAD
Retailer 8$664 CAD
Retailer 1$720 CAD
Retailer 4$728 CAD
Retailer 10$943 CAD
Retailer 13$1,007 CAD
Retailer 3$1,034 CAD
Retailer 9$1,129 CAD
Retailer 6$1,383 CAD
Retailer 11$1,551 CAD

42 data points across 13 retailers

19 retailers$348 CAD to $1,771 CAD

A
Cheapest Retailer
-
$348 CAD
$249 USD
Final sale: no returns
A
Retailer 2
-
$387 CAD
$277 USD
View
A
Retailer 3
-
$429 CAD
HK$2,400 HKD
View
B+
Retailer 4
-
$520 CAD
$372 USD
View
A
Retailer 5
-
$626 CAD
€427 EUR
View
A
Retailer 6
-
$664 CAD
ZAR 7,681 ZAR
View
B+
Retailer 7
-
$720 CAD
£406 GBP
View
B+
Retailer 8
-
$725 CAD
$519 USD
View
B+
Retailer 9
-
$728 CAD
$521 USD
View
B+
Retailer 10
-
$943 CAD
A$1,039 AUD
View
B
Retailer 11
-
$1,007 CAD
$721 USD
View
Retailer 12
-
$1,034 CAD
$740 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$1,129 CAD
A$1,243 AUD
View
B
Retailer 14
-
$1,251 CAD
SGD 1,210 SGD
View
B
Retailer 15
-
$1,316 CAD
$942 USD
View
B
Retailer 16
-
$1,333 CAD
$954 USD
View
B
Retailer 17
-
$1,383 CAD
$990 USD
View
B
Retailer 18
-
$1,551 CAD
£874 GBP
View
Most Expensive
B
Reve Diamonds
F25E505C1 · Oct 30
$1,771 CAD
$1,268 USD
View
18 more retailers have this diamond
Prices start from $348 CADSave up to $1,423 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
$348 CAD