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Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

VG • F/VS1 • IGI LG579384441

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG579384441

Diamond specifications and retailer prices

From $491 AUD
As of November 5, 2026
Save $1,156 AUD (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,647 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG579384441 or 579384441. Listed at 8 retailers as of November 5, 2026, with prices from $491 to $1,647, a $1,156 spread on the same certified stone. MOH London lists it at $1,647. 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

1.21
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579384441
Dimensions7.06 × 5.60 × 3.91 mm
L/W Ratio1.26
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.06 mm5.60 mm1.21 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579384441
Side View
Table 65.0%Crown 35.9°Girdle: MED-VTKPavilion 38°Culet: NoneDepth 69.8%

Caratlytics Score

How it works →
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 5
Current: $1,647 AUD|Low: $373 AUD|High: $1,671 AUD|Avg: $952 AUD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3$373 AUD
Retailer 5$491 AUD
Retailer 7$644 AUD
Retailer 2$769 AUD
Retailer 4$827 AUD
Retailer 8$1,029 AUD
Retailer 6$1,568 AUD
MOH London$1,647 AUD

29 data points across 8 retailers

8 retailers$491 AUD to $1,647 AUD

Retailer 1
-
$373 AUD
Price last confirmed 12 days ago
A
Retailer 2
-
$491 AUD
View
A
Retailer 3
-
$644 AUD
View
B+
Retailer 4
-
$769 AUD
View
B+
Retailer 5
-
$827 AUD
View
Retailer 6
-
$1,029 AUD
View
Price last confirmed 32 days ago
B
Retailer 7
-
$1,568 AUD
View
Most Expensive
B
MOH London
LG579384441 · Nov 5
$1,647 AUD
£908 GBP
View
7 more retailers have this diamond
Prices start from $491 AUDSave up to $1,156 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
1.21ct Cushion
$491 AUD