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Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG825633211

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG825633211

Diamond specifications and retailer prices

From $643 AUD
$452 USD
As of October 30, 2026
Save $3,357 AUD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,000 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825633211 or 825633211. Listed at 13 retailers as of October 30, 2026, with prices from $643 to $4,000, a $3,357 spread on the same certified stone. Brilliant Earth lists it at $4,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825633211
Dimensions6.73 × 6.55 × 4.17 mm
L/W Ratio1.03
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
6.73 mm6.55 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825633211
Side View
Table 60.0%Crown 34.8°Girdle: STK-THKPavilion 34°Culet: NoneDepth 63.7%

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: Oct 30
Current: $4,000 AUD|Low: $643 AUD|High: $4,484 AUD|Avg: $2,102 AUD|-9.9%
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
October 31, 2026
Retailer 10$643 AUD
Retailer 12$738 AUD
Retailer 7$925 AUD
Retailer 9$1,132 AUD
Retailer 6$1,174 AUD
Retailer 2$1,247 AUD
Retailer 4$1,567 AUD
Retailer 5$2,347 AUD
Retailer 11$2,630 AUD
Retailer 8$2,675 AUD
Retailer 13$2,808 AUD
Retailer 3$3,353 AUD
Brilliant Earth$4,000 AUD

40 data points across 13 retailers

13 retailers$643 AUD to $4,000 AUD

A
Cheapest Retailer
-
$643 AUD
$452 USD
Final sale: no returns
A
Retailer 2
-
$738 AUD
£408 GBP
View
A
Retailer 3
-
$925 AUD
$650 USD
View
A
Retailer 4
-
$1,132 AUD
$795 USD
View
A
Retailer 5
-
$1,174 AUD
£650 GBP
View
A
Retailer 6
-
$1,247 AUD
€834 EUR
View
A
Retailer 7
-
$1,567 AUD
$1,101 USD
View
B+
Retailer 8
-
$2,347 AUD
$1,649 USD
View
B+
Retailer 9
-
$2,630 AUD
$1,847 USD
View
B+
Retailer 10
-
$2,675 AUD
$1,879 USD
View
B+
Retailer 11
-
$2,808 AUD
£1,553 GBP
View
Retailer 12
-
$3,353 AUD
$2,355 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21322734A · Oct 31
$4,000 AUD
$2,810 USD
View
12 more retailers have this diamond
Prices start from $643 AUDSave up to $3,357 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
1.55ct Cushion
$643 AUD