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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG783670511

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG783670511

Diamond specifications and retailer prices

From $288 SGD
As of November 4, 2026
Save $1,244 SGD (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,532 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 top-tier cut grade and certified by IGI LG783670511 or 783670511. Listed at 17 retailers as of November 4, 2026, with prices from $288 to $1,532, a $1,244 spread on the same certified stone. Reve Diamonds lists it at $1,532. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783670511
Dimensions6.34 × 6.28 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.34 mm6.28 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783670511
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 66.1%

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: Nov 4
Current: $580 SGD|Low: $277 SGD|High: $1,751 SGD|Avg: $792 SGD|+14.9%
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
Retailer 16
Reve Diamonds
November 5, 2026
Retailer 11$288 SGD
Retailer 8$319 SGD
Retailer 10$426 SGD
Retailer 16$529 SGD
Retailer 15$551 SGD
Retailer 4$553 SGD
Retailer 1$580 SGD
Retailer 2$653 SGD
Retailer 3$731 SGD
Retailer 13$778 SGD
Retailer 12$852 SGD
Retailer 7$926 SGD
Retailer 6$995 SGD
Retailer 14$1,073 SGD
Retailer 5$1,094 SGD
Retailer 9$1,489 SGD
Reve Diamonds$1,532 SGD

22 data points across 17 retailers

17 retailers$288 SGD to $1,532 SGD

A
Cheapest Retailer
-
$288 SGD
Final sale: no returns
Retailer 2
-
$319 SGD
View
Price last confirmed 11 days ago
A
Retailer 3
-
$426 SGD
View
A
Retailer 4
-
$529 SGD
View
A
Retailer 5
-
$551 SGD
View
A
Retailer 6
-
$553 SGD
View
A
Retailer 7
-
$580 SGD
View
A
Retailer 8
-
$653 SGD
View
B+
Retailer 9
-
$731 SGD
View
B+
Retailer 10
-
$778 SGD
View
B+
Retailer 11
-
$852 SGD
View
Retailer 12
-
$926 SGD
View
Price last confirmed 8 days ago
Retailer 13
-
$995 SGD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
$1,073 SGD
View
B+
Retailer 15
-
$1,094 SGD
View
B
Retailer 16
-
$1,489 SGD
View
Most Expensive
B
Reve Diamonds
7BA50A69E · Nov 4
$1,532 SGD
$1,199 USD
View
16 more retailers have this diamond
Prices start from $288 SGDSave up to $1,244 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
$288 SGD