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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG644488847

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG644488847

Diamond specifications and retailer prices

From $370 AUD
$260 USD
As of November 1, 2026
Save $2,360 AUD (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,730 AUD at Queensmith · As of October 27, 2026
View at Queensmith

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG644488847 or 644488847. Listed at 21 retailers as of October 27, 2026, with prices from $370 to $2,730, a $2,360 spread on the same certified stone. Queensmith lists it at $2,730. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644488847
Dimensions5.57 × 5.57 × 3.50 mm
L/W Ratio1.00
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
5.57 mm5.57 mm1.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644488847
Side View
Table 57.0%Crown 31.6°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 62.8%

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 1
Current: $1,649 AUD|Low: $370 AUD|High: $2,434 AUD|Avg: $1,057 AUD|-4.4%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 7$370 AUD
Retailer 2$411 AUD
Retailer 18$456 AUD
Retailer 14$567 AUD
Retailer 13$686 AUD
Retailer 16$707 AUD
Retailer 3$746 AUD
Retailer 12$770 AUD
Retailer 5$927 AUD
Retailer 15$998 AUD
Retailer 17$1,004 AUD
Retailer 19$1,038 AUD
Retailer 8$1,110 AUD
Retailer 6$1,397 AUD
Retailer 9$1,428 AUD
Retailer 11$1,517 AUD
Retailer 1$1,649 AUD
Retailer 4$1,850 AUD
Retailer 10$2,434 AUD

39 data points across 19 retailers

21 retailers$370 AUD to $2,730 AUD

A
Cheapest Retailer
-
$370 AUD
$260 USD
Final sale: no returns
Retailer 2
-
$411 AUD
$289 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$456 AUD
HK$2,500 HKD
View
A
Retailer 4
-
$567 AUD
$398 USD
View
A
Retailer 5
-
$686 AUD
€459 EUR
View
A
Retailer 6
-
$707 AUD
ZAR 8,023 ZAR
View
A
Retailer 7
-
$746 AUD
$524 USD
View
A
Retailer 8
-
$770 AUD
£426 GBP
View
A
Retailer 9
-
$848 AUD
$596 USD
View
A
Retailer 10
-
$927 AUD
$651 USD
View
A
Retailer 11
-
$998 AUD
View
A
Retailer 12
-
$1,004 AUD
View
A
Retailer 13
-
$1,038 AUD
$729 USD
View
A
Retailer 14
-
$1,110 AUD
SGD 1,054 SGD
View
B+
Retailer 15
-
$1,397 AUD
$982 USD
View
B+
Retailer 16
-
$1,428 AUD
$1,003 USD
View
Retailer 17
-
$1,517 AUD
View
Price last confirmed 27 days ago
B+
Retailer 18
-
$1,649 AUD
£912 GBP
View
B+
Retailer 19
-
$1,850 AUD
$1,299 USD
View
B
Retailer 20
-
$2,434 AUD
$1,710 USD
View
Most Expensive
B
Queensmith
LG644488847 · Oct 27
$2,730 AUD
£1,510 GBP
View
20 more retailers have this diamond
Prices start from $370 AUDSave up to $2,360 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
$370 AUD