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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 $249 USD
As of November 4, 2026
Save $1,019 USD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,268 USD at Reve Diamonds · As of November 4, 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 November 4, 2026, with prices from $249 to $1,268, a $1,019 spread on the same certified stone. Reve Diamonds lists it at $1,268. 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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Price History

Last verified: Nov 4
Current: $510 USD|Low: $249 USD|High: $1,170 USD|Avg: $616 USD|+3.7%
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
November 4, 2026
Retailer 5$249 USD
Retailer 13$277 USD
Retailer 2$372 USD
Retailer 9$446 USD
Retailer 8$477 USD
Retailer 1$510 USD
Retailer 4$521 USD
Retailer 6$676 USD
Retailer 7$734 USD
Retailer 3$740 USD
Retailer 11$807 USD
Retailer 10$990 USD
Retailer 12$1,109 USD

42 data points across 13 retailers

19 retailers$249 USD to $1,268 USD

A
Cheapest Retailer
-
$249 USD
Final sale: no returns
Retailer 2
-
$277 USD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$307 USD
View
B+
Retailer 4
-
$372 USD
View
A
Retailer 5
-
$446 USD
View
A
Retailer 6
-
$477 USD
View
A
Retailer 7
-
$510 USD
View
B+
Retailer 8
-
$519 USD
View
B+
Retailer 9
-
$521 USD
View
B+
Retailer 10
-
$676 USD
View
B
Retailer 11
-
$734 USD
View
Retailer 12
-
$740 USD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$807 USD
View
B
Retailer 14
-
$895 USD
View
B
Retailer 15
-
$942 USD
View
B
Retailer 16
-
$954 USD
View
B
Retailer 17
-
$990 USD
View
Retailer 18
-
$1,109 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Reve Diamonds
F25E505C1 · Nov 4
$1,268 USD
View
18 more retailers have this diamond
Prices start from $249 USDSave up to $1,019 USD

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
$249 USD