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Cushion|Lab Grown|IGI

1.21ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG840632427

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840632427

Diamond specifications and retailer prices

From $614 AUD
$431 USD
As of October 30, 2026
Save $2,537 AUD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,150 AUD at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632427 or 840632427. Listed at 16 retailers as of October 30, 2026, with prices from $614 to $3,150, a $2,537 spread on the same certified stone. Helzberg Diamonds lists it at $3,150. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632427
Dimensions7.60 × 5.33 × 3.64 mm
L/W Ratio1.43
Girdle conditionFaceted
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
7.60 mm5.33 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632427
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 35°Culet: NoneDepth 68.3%

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: Oct 30
Current: $3,150 AUD|Low: $614 AUD|High: $3,644 AUD|Avg: $1,746 AUD
Helzberg Diamonds
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
Retailer 16
October 31, 2026
Retailer 3$614 AUD
Retailer 12$720 AUD
Retailer 9$890 AUD
Retailer 5$1,009 AUD
Retailer 6$1,081 AUD
Retailer 13$1,094 AUD
Retailer 14$1,166 AUD
Retailer 16$1,186 AUD
Retailer 2$1,219 AUD
Retailer 10$1,621 AUD
Retailer 7$2,161 AUD
Retailer 8$2,185 AUD
Retailer 4$2,235 AUD
Retailer 11$2,548 AUD
Retailer 15$2,656 AUD
Helzberg Diamonds$3,150 AUD

18 data points across 16 retailers

16 retailers$614 AUD to $3,150 AUD

A
Cheapest Retailer
-
$614 AUD
$431 USD
Final sale: no returns
A
Retailer 2
-
$720 AUD
£398 GBP
View
A
Retailer 3
-
$890 AUD
$625 USD
View
A
Retailer 4
-
$1,009 AUD
$709 USD
View
A
Retailer 5
-
$1,081 AUD
$759 USD
View
A
Retailer 6
-
$1,094 AUD
€732 EUR
View
A
Retailer 7
-
$1,166 AUD
ZAR 13,235 ZAR
View
A
Retailer 8
-
$1,186 AUD
$833 USD
View
A
Retailer 9
-
$1,219 AUD
£674 GBP
View
B+
Retailer 10
-
$1,621 AUD
$1,139 USD
View
B+
Retailer 11
-
$2,161 AUD
SGD 2,051 SGD
View
Retailer 12
-
$2,185 AUD
$1,535 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$2,235 AUD
$1,570 USD
View
B+
Retailer 14
-
$2,548 AUD
$1,790 USD
View
B
Retailer 15
-
$2,656 AUD
£1,469 GBP
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJIKIN · Oct 31
$3,150 AUD
$2,213 USD
View
15 more retailers have this diamond
Prices start from $614 AUDSave up to $2,537 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
$614 AUD