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Cushion|Lab Grown|IGI

1.55ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG675561655

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

Certificate IGI LG675561655

Diamond specifications and retailer prices

From $691 AUD
As of November 3, 2026
Save $2,059 AUD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,751 AUD at Brilliant Earth · As of November 3, 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG675561655 or 675561655. Listed at 16 retailers as of November 3, 2026, with prices from $691 to $2,751, a $2,059 spread on the same certified stone. Brilliant Earth lists it at $2,751. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG675561655
Dimensions6.80 × 6.61 × 4.32 mm
L/W Ratio1.03
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
6.80 mm6.61 mm1.55 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG675561655
Side View
Table 63.0%Crown 35°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 65.4%

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 3
Current: $2,751 AUD|Low: $451 AUD|High: $2,896 AUD|Avg: $1,154 AUD|-5.0%
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
November 2, 2026
Retailer 12$451 AUD
Retailer 3$530 AUD
Retailer 10$691 AUD
Retailer 5$755 AUD
Retailer 9$755 AUD
Retailer 8$779 AUD
Retailer 6$838 AUD
Retailer 7$859 AUD
Retailer 11$1,052 AUD
Retailer 2$1,185 AUD
Retailer 14$1,521 AUD
Retailer 4$1,777 AUD
Retailer 13$1,819 AUD
Brilliant Earth$2,751 AUD

40 data points across 14 retailers

16 retailers$691 AUD to $2,751 AUD

Retailer 1
-
$451 AUD
Price last confirmed 13 days ago
A
Retailer 2
-
$691 AUD
View
A
Retailer 3
-
$755 AUD
View
A
Retailer 4
-
$755 AUD
View
A
Retailer 5
-
$779 AUD
View
A
Retailer 6
-
$793 AUD
View
A
Retailer 7
-
$838 AUD
View
A
Retailer 8
-
$859 AUD
View
Retailer 9
-
$1,052 AUD
View
Price last confirmed 11 days ago
B+
Retailer 10
-
$1,185 AUD
View
B+
Retailer 11
-
$1,393 AUD
View
Retailer 12
-
$1,521 AUD
View
Price last confirmed 19 days ago
B+
Retailer 13
-
$1,527 AUD
View
B
Retailer 14
-
$1,777 AUD
View
Retailer 15
-
$1,819 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
14978783A · Nov 3
$2,751 AUD
$1,890 USD
View
15 more retailers have this diamond
Prices start from $691 AUDSave up to $2,059 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
$691 AUD