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Cushion|Lab Grown|IGI

1.55ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG520211710

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG520211710

Diamond specifications and retailer prices

From $349 AUD
As of November 4, 2026
Save $1,504 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,853 AUD at Brilliant Earth · As of November 4, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG520211710 or 520211710. Listed at 15 retailers as of November 4, 2026, with prices from $349 to $1,853, a $1,504 spread on the same certified stone. Brilliant Earth lists it at $1,853. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle30.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520211710
Dimensions7.71 × 6.23 × 3.88 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Blue 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
7.71 mm6.23 mm1.55 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520211710
Side View
Table 61.0%Crown 33.2°Girdle: MED-THKPavilion 30.6°Culet: NoneDepth 62.3%

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 4
Current: $1,853 AUD|Low: $525 AUD|High: $2,124 AUD|Avg: $991 AUD|-10.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 8$525 AUD
Retailer 3$629 AUD
Retailer 5$670 AUD
Retailer 2$714 AUD
Retailer 10$860 AUD
Retailer 4$908 AUD
Retailer 7$954 AUD
Retailer 9$1,311 AUD
Retailer 6$1,557 AUD
Brilliant Earth$1,853 AUD

44 data points across 10 retailers

15 retailers$349 AUD to $1,853 AUD

A
Cheapest Retailer
-
$349 AUD
Final sale: no returns
B+
Retailer 2
-
$525 AUD
View
A
Retailer 3
-
$629 AUD
View
A
Retailer 4
-
$670 AUD
View
A
Retailer 5
-
$714 AUD
View
A
Retailer 6
-
$716 AUD
View
A
Retailer 7
-
$797 AUD
View
A
Retailer 8
-
$860 AUD
View
A
Retailer 9
-
$908 AUD
View
A
Retailer 10
-
$954 AUD
View
B
Retailer 11
-
$1,311 AUD
View
B
Retailer 12
-
$1,324 AUD
View
B+
Retailer 13
-
$1,557 AUD
View
B
Retailer 14
-
$1,792 AUD
View
Most Expensive
B
Brilliant Earth
10788322A · Nov 4
$1,853 AUD
$1,300 USD
View
14 more retailers have this diamond
Prices start from $349 AUDSave up to $1,504 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
$349 AUD