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Cushion|Lab Grown|IGI

1.09ct E FL Cushion Lab Grown Diamond

GD • E/FL • IGI LG840635024

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840635024

Diamond specifications and retailer prices

From $585 AUD
£324 GBP
As of October 30, 2026
Save $2,182 AUD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,767 AUD at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG840635024 or 840635024. Listed at 15 retailers as of October 30, 2026, with prices from $585 to $2,767, a $2,182 spread on the same certified stone. Helzberg Diamonds lists it at $2,767. 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

1.09
Carat
E
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635024
Dimensions7.59 × 5.18 × 3.47 mm
L/W Ratio1.47
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
7.59 mm5.18 mm1.09 ctE / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635024
Side View
Table 63.0%Crown 35.9°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 67.0%

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: Oct 30
Current: $2,767 AUD|Low: $584 AUD|High: $3,132 AUD|Avg: $1,562 AUD|-1.3%
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
October 31, 2026
Retailer 10$585 AUD
Retailer 14$833 AUD
Retailer 3$895 AUD
Retailer 5$898 AUD
Retailer 11$924 AUD
Retailer 13$949 AUD
Retailer 15$968 AUD
Retailer 2$975 AUD
Retailer 8$1,360 AUD
Retailer 6$1,511 AUD
Retailer 4$1,840 AUD
Retailer 7$1,986 AUD
Retailer 12$2,224 AUD
Retailer 9$2,605 AUD
Helzberg Diamonds$2,767 AUD

15 data points across 15 retailers

15 retailers$585 AUD to $2,767 AUD

A
Cheapest Retailer
-
$585 AUD
£324 GBP
A
Retailer 2
-
$833 AUD
$585 USD
View
A
Retailer 3
-
$895 AUD
$629 USD
View
A
Retailer 4
-
$898 AUD
$631 USD
View
A
Retailer 5
-
$924 AUD
€618 EUR
View
A
Retailer 6
-
$949 AUD
ZAR 10,764 ZAR
View
A
Retailer 7
-
$968 AUD
$680 USD
View
A
Retailer 8
-
$975 AUD
£539 GBP
View
B+
Retailer 9
-
$1,360 AUD
$955 USD
View
B+
Retailer 10
-
$1,511 AUD
SGD 1,434 SGD
View
B
Retailer 11
-
$1,840 AUD
$1,293 USD
View
Retailer 12
-
$1,986 AUD
$1,395 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
$2,224 AUD
£1,230 GBP
View
B
Retailer 14
-
$2,605 AUD
$1,830 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJLGIK · Oct 30
$2,767 AUD
$1,944 USD
View
14 more retailers have this diamond
Prices start from $585 AUDSave up to $2,182 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
1.09ct Cushion
$585 AUD