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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG786634100

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG786634100

Diamond specifications and retailer prices

From $406 SGD
As of November 4, 2026
Save $1,611 SGD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,678 SGD at Queensmith · As of October 27, 2026
View at Queensmith

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 LG786634100 or 786634100. Listed at 18 retailers as of November 3, 2026, with a 397% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786634100
Dimensions7.02 × 6.25 × 3.93 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeLarge
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
7.02 mm6.25 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786634100
Side View
Table 52.0%Crown 34.5°Girdle: Slightly ThickPavilion 41.1°Culet: LargeDepth 62.9%

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: $1,238 SGD|Low: $390 SGD|High: $2,042 SGD|Avg: $1,017 SGD|+1.3%
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
November 4, 2026
Retailer 11$406 SGD
Retailer 5$455 SGD
Retailer 4$472 SGD
Retailer 2$503 SGD
Retailer 13$503 SGD
Retailer 12$677 SGD
Retailer 9$703 SGD
Retailer 7$889 SGD
Retailer 1$1,238 SGD
Retailer 10$1,477 SGD
Retailer 3$1,611 SGD
Retailer 14$1,619 SGD
Retailer 6$1,967 SGD
Retailer 8$2,018 SGD

44 data points across 14 retailers

18 retailers$406 SGD to $2,018 SGD

A
Cheapest Retailer
-
$406 SGD
A
Retailer 2
-
$455 SGD
View
Final sale: no returns
A
Retailer 3
-
$472 SGD
View
Retailer 4
-
$503 SGD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$503 SGD
View
A
Retailer 6
-
$677 SGD
View
B+
Retailer 7
-
$703 SGD
View
B+
Retailer 8
-
$707 SGD
View
B+
Retailer 9
-
$889 SGD
View
B
Retailer 10
-
$1,238 SGD
View
B
Retailer 11
-
$1,477 SGD
View
B
Retailer 12
-
$1,611 SGD
View
B
Retailer 13
-
$1,619 SGD
View
B
Retailer 14
-
$1,677 SGD
View
B
Retailer 15
-
$1,967 SGD
View
B
Retailer 16
-
$2,005 SGD
View
B
Retailer 17
-
$2,018 SGD
View
Most Expensive
Queensmith
LG786634100 · Oct 27
$2,678 SGD
£1,650 GBP
View
Price last confirmed 8 days ago
17 more retailers have this diamond
Prices start from $406 SGDSave up to $1,611 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
$406 SGD