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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 $385 AUD
As of November 4, 2026
Save $1,505 AUD (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,890 AUD 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 $385 to $1,890, a $1,505 spread on the same certified stone. Reve Diamonds lists it at $1,890. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $567 AUD|Low: $331 AUD|High: $1,953 AUD|Avg: $989 AUD|+14.7%
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
Retailer 14
Retailer 15
Reve Diamonds
November 4, 2026
Retailer 9$385 AUD
Retailer 4$408 AUD
Retailer 1$567 AUD
Retailer 14$626 AUD
Retailer 12$701 AUD
Retailer 10$718 AUD
Retailer 6$744 AUD
Retailer 11$753 AUD
Retailer 5$861 AUD
Retailer 3$992 AUD
Retailer 2$1,033 AUD
Retailer 7$1,132 AUD
Retailer 8$1,445 AUD
Retailer 15$1,611 AUD
Retailer 13$1,631 AUD
Reve Diamonds$1,890 AUD

38 data points across 16 retailers

16 retailers$385 AUD to $1,890 AUD

A
Cheapest Retailer
-
$385 AUD
Final sale: no returns
Retailer 2
-
$408 AUD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$567 AUD
View
A
Retailer 4
-
$626 AUD
View
B+
Retailer 5
-
$701 AUD
View
B+
Retailer 6
-
$718 AUD
View
B+
Retailer 7
-
$744 AUD
View
B+
Retailer 8
-
$753 AUD
View
B+
Retailer 9
-
$861 AUD
View
Retailer 10
-
$992 AUD
View
Price last confirmed 9 days ago
Retailer 11
-
$1,033 AUD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$1,132 AUD
View
B
Retailer 13
-
$1,445 AUD
View
B
Retailer 14
-
$1,611 AUD
View
B
Retailer 15
-
$1,631 AUD
View
Most Expensive
B
Reve Diamonds
E3A5C0318 · Nov 4
$1,890 AUD
$1,326 USD
View
15 more retailers have this diamond
Prices start from $385 AUDSave up to $1,505 AUD

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
$385 AUD