Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

GD • F/VS1 • IGI LG605341761

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG605341761

Diamond specifications and retailer prices

From $225 USD
As of November 4, 2026
Save $875 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,100 USD at MOH London · As of November 2, 2026
View at MOH London

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 F colour (colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG605341761 or 605341761. Listed at 10 retailers as of November 2, 2026, with prices from $225 to $1,100, a $875 spread on the same certified stone. MOH London lists it at $1,100. 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
F
Color
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605341761
Dimensions7.24 × 5.92 × 3.85 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.24 mm5.92 mm1.28 ctF / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605341761
Side View
Table 60.0%Crown 37°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 65.0%

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: Nov 4
Current: $1,100 USD|Low: $153 USD|High: $1,113 USD|Avg: $595 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 7$225 USD
Retailer 9$376 USD
Retailer 6$431 USD
Retailer 4$473 USD
Retailer 8$496 USD
Retailer 2$505 USD
Retailer 3$549 USD
Retailer 11$663 USD
Retailer 5$707 USD
Retailer 10$1,053 USD
MOH London$1,100 USD

44 data points across 11 retailers

10 retailers$225 USD to $1,100 USD

A
Cheapest Retailer
-
$225 USD
Final sale: no returns
B+
Retailer 2
-
$376 USD
View
B+
Retailer 3
-
$431 USD
View
B+
Retailer 4
-
$473 USD
View
B+
Retailer 5
-
$496 USD
View
B+
Retailer 6
-
$505 USD
View
Retailer 7
-
$663 USD
View
Price last confirmed 80 days ago
Retailer 8
-
$707 USD
View
Price last confirmed 28 days ago
B
Retailer 9
-
$1,053 USD
View
Most Expensive
B
MOH London
LG605341761 · Nov 2
$1,100 USD
£866 GBP
View
9 more retailers have this diamond
Prices start from $225 USDSave up to $875 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
$225 USD