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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

GD • D/VS1 • IGI LG645412281

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG645412281

Diamond specifications and retailer prices

From $345 SGD
As of November 4, 2026
Save $1,349 SGD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,694 SGD 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 standard cut grade and certified by IGI LG645412281 or 645412281. Listed at 16 retailers as of November 4, 2026, with prices from $345 to $1,694, a $1,349 spread on the same certified stone. Reve Diamonds lists it at $1,694. 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
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645412281
Dimensions6.24 × 6.22 × 4.22 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
6.24 mm6.22 mm1.28 ctD / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645412281
Side View
Table 61.0%Crown 36°Girdle: MED-STKPavilion 40°Culet: NoneDepth 67.8%

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: $717 SGD|Low: $296 SGD|High: $1,751 SGD|Avg: $883 SGD|+22.5%
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
Retailer 14
Retailer 15
Reve Diamonds
November 5, 2026
Retailer 10$345 SGD
Retailer 4$365 SGD
Retailer 8$509 SGD
Retailer 14$561 SGD
Retailer 12$629 SGD
Retailer 11$644 SGD
Retailer 6$667 SGD
Retailer 1$717 SGD
Retailer 5$772 SGD
Retailer 3$889 SGD
Retailer 2$926 SGD
Retailer 7$1,015 SGD
Retailer 9$1,296 SGD
Retailer 15$1,444 SGD
Retailer 13$1,462 SGD
Reve Diamonds$1,694 SGD

39 data points across 16 retailers

16 retailers$345 SGD to $1,694 SGD

A
Cheapest Retailer
-
$345 SGD
Final sale: no returns
Retailer 2
-
$365 SGD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$509 SGD
View
A
Retailer 4
-
$561 SGD
View
B+
Retailer 5
-
$629 SGD
View
B+
Retailer 6
-
$644 SGD
View
B+
Retailer 7
-
$667 SGD
View
B+
Retailer 8
-
$717 SGD
View
B+
Retailer 9
-
$772 SGD
View
Retailer 10
-
$889 SGD
View
Price last confirmed 9 days ago
Retailer 11
-
$926 SGD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$1,015 SGD
View
B
Retailer 13
-
$1,296 SGD
View
B
Retailer 14
-
$1,444 SGD
View
B
Retailer 15
-
$1,462 SGD
View
Most Expensive
B
Reve Diamonds
E3A5C0318 · Nov 4
$1,694 SGD
$1,326 USD
View
15 more retailers have this diamond
Prices start from $345 SGDSave up to $1,349 SGD

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
$345 SGD