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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 $355 AUD
As of November 4, 2026
Save $1,452 AUD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,807 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 very-good cut grade and certified by IGI LG770608936 or 770608936. Listed at 19 retailers as of November 4, 2026, with prices from $355 to $1,807, a $1,452 spread on the same certified stone. Reve Diamonds lists it at $1,807. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $727 AUD|Low: $355 AUD|High: $1,668 AUD|Avg: $878 AUD|+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 4, 2026
Retailer 5$355 AUD
Retailer 13$395 AUD
Retailer 2$530 AUD
Retailer 9$636 AUD
Retailer 8$680 AUD
Retailer 1$727 AUD
Retailer 4$743 AUD
Retailer 6$964 AUD
Retailer 7$1,046 AUD
Retailer 3$1,055 AUD
Retailer 11$1,150 AUD
Retailer 10$1,411 AUD
Retailer 12$1,581 AUD

42 data points across 13 retailers

19 retailers$355 AUD to $1,807 AUD

A
Cheapest Retailer
-
$355 AUD
Final sale: no returns
Retailer 2
-
$395 AUD
View
Price last confirmed 10 days ago
A
Retailer 3
-
$438 AUD
View
B+
Retailer 4
-
$530 AUD
View
A
Retailer 5
-
$636 AUD
View
A
Retailer 6
-
$680 AUD
View
A
Retailer 7
-
$727 AUD
View
B+
Retailer 8
-
$740 AUD
View
B+
Retailer 9
-
$743 AUD
View
B+
Retailer 10
-
$964 AUD
View
B
Retailer 11
-
$1,046 AUD
View
Retailer 12
-
$1,055 AUD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$1,150 AUD
View
B
Retailer 14
-
$1,276 AUD
View
B
Retailer 15
-
$1,343 AUD
View
B
Retailer 16
-
$1,360 AUD
View
B
Retailer 17
-
$1,411 AUD
View
Retailer 18
-
$1,581 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
Reve Diamonds
F25E505C1 · Nov 4
$1,807 AUD
$1,268 USD
View
18 more retailers have this diamond
Prices start from $355 AUDSave up to $1,452 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
$355 AUD