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Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG665409443

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG665409443

Diamond specifications and retailer prices

From $548 AUD
$385 USD
As of October 31, 2026
Save $1,759 AUD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,634 AUD at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct 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 LG665409443 or 665409443. Listed at 16 retailers as of October 29, 2026, with a 321% 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

1.05
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665409443
Dimensions7.00 × 5.27 × 3.53 mm
L/W Ratio1.33
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
7.00 mm5.27 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665409443
Side View
Table 59.0%Crown 32.8°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 67.0%

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 31
Current: $2,634 AUD|Low: $512 AUD|High: $2,634 AUD|Avg: $1,308 AUD
Brilliant Earth
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 8$548 AUD
Retailer 14$868 AUD
Retailer 3$913 AUD
Retailer 15$915 AUD
Retailer 5$930 AUD
Retailer 2$952 AUD
Retailer 13$984 AUD
Retailer 9$1,015 AUD
Retailer 12$1,391 AUD
Retailer 11$1,456 AUD
Retailer 4$1,488 AUD
Retailer 7$1,904 AUD
Retailer 6$2,264 AUD
Retailer 10$2,307 AUD
Brilliant Earth$2,634 AUD

39 data points across 15 retailers

16 retailers$548 AUD to $2,307 AUD

A
Cheapest Retailer
-
$548 AUD
$385 USD
Final sale: no returns
A
Retailer 2
-
$868 AUD
$610 USD
View
A
Retailer 3
-
$913 AUD
$641 USD
View
A
Retailer 4
-
$915 AUD
$643 USD
View
A
Retailer 5
-
$930 AUD
$653 USD
View
A
Retailer 6
-
$952 AUD
€637 EUR
View
A
Retailer 7
-
$984 AUD
ZAR 11,166 ZAR
View
A
Retailer 8
-
$1,015 AUD
£561 GBP
View
B+
Retailer 9
-
$1,391 AUD
View
B+
Retailer 10
-
$1,456 AUD
View
B+
Retailer 11
-
$1,488 AUD
$1,045 USD
View
B
Retailer 12
-
$1,904 AUD
$1,338 USD
View
B
Retailer 13
-
$2,165 AUD
$1,521 USD
View
B
Retailer 14
-
$2,264 AUD
$1,591 USD
View
B
Retailer 15
-
$2,307 AUD
£1,276 GBP
View
Most Expensive
Brilliant Earth
14719488A · Oct 12
$2,634 AUD
$1,850 USD
View
Price last confirmed 19 days ago
15 more retailers have this diamond
Prices start from $548 AUDSave up to $1,759 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
1.05ct Cushion
$548 AUD