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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 $475 USD
As of November 3, 2026
Save $1,415 USD (75%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,890 USD 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 $475 to $1,890, a $1,415 spread on the same certified stone. Brilliant Earth lists it at $1,890. 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
Color
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: $1,890 USD|Low: $310 USD|High: $1,990 USD|Avg: $791 USD|-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$310 USD
Retailer 3$364 USD
Retailer 10$475 USD
Retailer 5$519 USD
Retailer 9$519 USD
Retailer 8$535 USD
Retailer 6$576 USD
Retailer 7$590 USD
Retailer 11$723 USD
Retailer 2$814 USD
Retailer 14$1,045 USD
Retailer 4$1,221 USD
Retailer 13$1,250 USD
Brilliant Earth$1,890 USD

41 data points across 14 retailers

16 retailers$475 USD to $1,890 USD

Retailer 1
-
$310 USD
Price last confirmed 11 days ago
A
Retailer 2
-
$475 USD
View
A
Retailer 3
-
$519 USD
View
A
Retailer 4
-
$519 USD
View
A
Retailer 5
-
$535 USD
View
A
Retailer 6
-
$545 USD
View
A
Retailer 7
-
$576 USD
View
A
Retailer 8
-
$590 USD
View
Retailer 9
-
$723 USD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$814 USD
View
B+
Retailer 11
-
$957 USD
View
Retailer 12
-
$1,045 USD
View
Price last confirmed 17 days ago
B+
Retailer 13
-
$1,049 USD
View
B
Retailer 14
-
$1,221 USD
View
Retailer 15
-
$1,250 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
14978783A · Nov 3
$1,890 USD
View
15 more retailers have this diamond
Prices start from $475 USDSave up to $1,415 USD

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
$475 USD