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Cushion|Lab Grown|IGI

1.28ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG647483890

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG647483890

Diamond specifications and retailer prices

From $258 USD
As of October 30, 2026
Save $1,032 USD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,290 USD at Reve Diamonds · As of October 30, 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 LG647483890 or 647483890. Listed at 16 retailers as of October 30, 2026, with prices from $258 to $1,290, a $1,032 spread on the same certified stone. Reve Diamonds lists it at $1,290. 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
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647483890
Dimensions6.22 × 6.16 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.22 mm6.16 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647483890
Side View
Table 61.0%Crown 35.9°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 67.9%

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: Oct 30
Current: $440 USD|Low: $232 USD|High: $1,370 USD|Avg: $662 USD|+1.0%
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
October 31, 2026
Retailer 5$258 USD
Retailer 15$286 USD
Retailer 14$383 USD
Retailer 1$440 USD
Retailer 6$484 USD
Retailer 12$491 USD
Retailer 3$522 USD
Retailer 8$534 USD
Retailer 2$604 USD
Retailer 13$696 USD
Retailer 11$725 USD
Retailer 7$794 USD
Retailer 4$970 USD
Retailer 9$1,130 USD
Retailer 10$1,151 USD
Reve Diamonds$1,290 USD

39 data points across 16 retailers

16 retailers$258 USD to $1,290 USD

A
Cheapest Retailer
-
$258 USD
Final sale: no returns
A
Retailer 2
-
$286 USD
View
Retailer 3
-
$383 USD
£302 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
$440 USD
€419 EUR
View
A
Retailer 5
-
$484 USD
View
A
Retailer 6
-
$491 USD
ZAR 7,924 ZAR
View
A
Retailer 7
-
$522 USD
View
B+
Retailer 8
-
$534 USD
£421 GBP
View
B+
Retailer 9
-
$604 USD
View
B+
Retailer 10
-
$696 USD
A$1,071 AUD
View
B+
Retailer 11
-
$725 USD
View
B+
Retailer 12
-
$794 USD
View
B
Retailer 13
-
$970 USD
View
B
Retailer 14
-
$1,130 USD
View
B
Retailer 15
-
$1,151 USD
£906 GBP
View
Most Expensive
B
Reve Diamonds
8B4D38AAF · Oct 30
$1,290 USD
View
15 more retailers have this diamond
Prices start from $258 USDSave up to $1,032 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
$258 USD