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Cushion|Lab Grown|IGI

1.21ct F IF Cushion Lab Grown Diamond

EX • F/IF • IGI LG655426099

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG655426099

Diamond specifications and retailer prices

From $326 AUD
As of November 6, 2026
Save $1,828 AUD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,179 AUD at Queensmith · As of October 27, 2026
View at Queensmith

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655426099 or 655426099. Listed at 21 retailers as of November 6, 2026, with a 561% 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

1.21
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655426099
Dimensions7.13 × 5.77 × 3.77 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.13 mm5.77 mm1.21 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655426099
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 65.3%

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 6
Current: $658 AUD|Low: $326 AUD|High: $3,027 AUD|Avg: $1,089 AUD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
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Retailer 11
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Retailer 19
November 7, 2026
Retailer 9$326 AUD
Retailer 3$362 AUD
Retailer 19$409 AUD
Retailer 5$498 AUD
Retailer 12$611 AUD
Retailer 13$614 AUD
Retailer 1$658 AUD
Retailer 4$719 AUD
Retailer 15$883 AUD
Retailer 2$898 AUD
Retailer 7$1,151 AUD
Retailer 10$1,185 AUD
Retailer 11$1,231 AUD
Retailer 8$1,243 AUD
Retailer 17$1,508 AUD
Retailer 14$1,691 AUD
Retailer 6$1,741 AUD
Retailer 18$1,892 AUD
Retailer 16$2,154 AUD

42 data points across 19 retailers

21 retailers$326 AUD to $2,154 AUD

A
Cheapest Retailer
-
$326 AUD
Final sale: no returns
Retailer 2
-
$362 AUD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$409 AUD
View
B+
Retailer 4
-
$498 AUD
View
A
Retailer 5
-
$611 AUD
View
A
Retailer 6
-
$614 AUD
View
A
Retailer 7
-
$658 AUD
View
A
Retailer 8
-
$719 AUD
View
A
Retailer 9
-
$883 AUD
View
A
Retailer 10
-
$898 AUD
View
A
Retailer 11
-
$1,151 AUD
View
A
Retailer 12
-
$1,185 AUD
View
A
Retailer 13
-
$1,231 AUD
View
A
Retailer 14
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$1,243 AUD
View
Retailer 15
-
$1,508 AUD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
$1,691 AUD
View
B+
Retailer 17
-
$1,741 AUD
View
B+
Retailer 18
-
$1,892 AUD
View
Retailer 19
-
$1,928 AUD
View
Price last confirmed 44 days ago
B+
Retailer 20
-
$2,154 AUD
View
Most Expensive
Queensmith
LG655426099 · Oct 27
$3,179 AUD
£1,720 GBP
View
Price last confirmed 10 days ago
20 more retailers have this diamond
Prices start from $326 AUDSave up to $1,828 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
$326 AUD