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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 $318 SGD
As of November 4, 2026
Save $1,302 SGD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,620 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 very-good cut grade and certified by IGI LG770608936 or 770608936. Listed at 19 retailers as of November 4, 2026, with prices from $318 to $1,620, a $1,302 spread on the same certified stone. Reve Diamonds lists it at $1,620. 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
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: $652 SGD|Low: $318 SGD|High: $1,495 SGD|Avg: $787 SGD|+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 5, 2026
Retailer 5$318 SGD
Retailer 13$354 SGD
Retailer 2$475 SGD
Retailer 10$570 SGD
Retailer 9$610 SGD
Retailer 1$652 SGD
Retailer 4$666 SGD
Retailer 7$864 SGD
Retailer 8$938 SGD
Retailer 3$946 SGD
Retailer 12$1,031 SGD
Retailer 11$1,265 SGD
Retailer 6$1,413 SGD

43 data points across 13 retailers

19 retailers$318 SGD to $1,620 SGD

A
Cheapest Retailer
-
$318 SGD
Final sale: no returns
Retailer 2
-
$354 SGD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$392 SGD
View
B+
Retailer 4
-
$475 SGD
View
A
Retailer 5
-
$570 SGD
View
A
Retailer 6
-
$610 SGD
View
A
Retailer 7
-
$652 SGD
View
B+
Retailer 8
-
$663 SGD
View
B+
Retailer 9
-
$666 SGD
View
B+
Retailer 10
-
$864 SGD
View
B
Retailer 11
-
$938 SGD
View
Retailer 12
-
$946 SGD
View
Price last confirmed 22 days ago
Retailer 13
-
$1,031 SGD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$1,144 SGD
View
B
Retailer 15
-
$1,204 SGD
View
B
Retailer 16
-
$1,219 SGD
View
B
Retailer 17
-
$1,265 SGD
View
B
Retailer 18
-
$1,413 SGD
View
Most Expensive
B
Reve Diamonds
F25E505C1 · Nov 4
$1,620 SGD
$1,268 USD
View
18 more retailers have this diamond
Prices start from $318 SGDSave up to $1,302 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
$318 SGD