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Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG750599918

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG750599918

Diamond specifications and retailer prices

From $390 AUD
As of November 5, 2026
Save $1,140 AUD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,647 AUD at Reve Diamonds · As of October 11, 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG750599918 or 750599918. Listed at 12 retailers as of November 5, 2026, with a 292% 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
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750599918
Dimensions7.55 × 5.87 × 3.91 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.55 mm5.87 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750599918
Side View
Table 64.0%Crown 28.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 66.6%

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 5
Current: $390 AUD|Low: $290 AUD|High: $1,647 AUD|Avg: $789 AUD|+0.4%
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
Reve Diamonds
November 5, 2026
Retailer 4$299 AUD
Retailer 5$321 AUD
Retailer 1$390 AUD
Retailer 11$573 AUD
Retailer 9$577 AUD
Retailer 6$584 AUD
Retailer 12$593 AUD
Retailer 3$683 AUD
Retailer 2$796 AUD
Retailer 10$809 AUD
Retailer 13$1,029 AUD
Retailer 8$1,133 AUD
Retailer 7$1,530 AUD
Reve Diamonds$1,647 AUD

38 data points across 14 retailers

12 retailers$390 AUD to $1,530 AUD

A
Cheapest Retailer
-
$390 AUD
A
Retailer 2
-
$573 AUD
View
A
Retailer 3
-
$577 AUD
View
A
Retailer 4
-
$584 AUD
View
A
Retailer 5
-
$593 AUD
View
A
Retailer 6
-
$683 AUD
View
B+
Retailer 7
-
$796 AUD
View
B+
Retailer 8
-
$809 AUD
View
B+
Retailer 9
-
$1,029 AUD
View
B+
Retailer 10
-
$1,133 AUD
View
B
Retailer 11
-
$1,530 AUD
View
Most Expensive
Reve Diamonds
26DD45DAA · Oct 11
$1,647 AUD
$1,153 USD
View
Price last confirmed 25 days ago
11 more retailers have this diamond
Prices start from $390 AUDSave up to $1,140 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
$390 AUD