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Cushion|Lab Grown|IGI

1.55ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG805631838

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

Certificate IGI LG805631838

Diamond specifications and retailer prices

From €535 EUR
$598 USD
As of November 1, 2026
Save €2,087 EUR (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €2,623 EUR 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG805631838 or 805631838. Listed at 9 retailers as of October 31, 2026, with prices from €535 to €2,623, a €2,087 spread on the same certified stone. Brilliant Earth lists it at €2,623. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805631838
Dimensions6.52 × 6.38 × 4.21 mm
L/W Ratio1.02
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
6.52 mm6.38 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805631838
Side View
Table 62.0%Crown 35.4°Girdle: STK-THKPavilion 33.5°Culet: NoneDepth 66.0%

Caratlytics Score

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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 1
Current: €2,623 EUR|Low: €535 EUR|High: €4,153 EUR|Avg: €1,400 EUR|-36.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8€535 EUR
Retailer 4€627 EUR
Retailer 6€632 EUR
Retailer 2€711 EUR
Retailer 5€964 EUR
Retailer 9€1,316 EUR
Retailer 3€1,556 EUR
Retailer 7€2,227 EUR
Brilliant Earth€2,623 EUR

44 data points across 9 retailers

9 retailers€535 EUR to €2,623 EUR

A
Cheapest Retailer
-
€535 EUR
$598 USD
A
Retailer 2
-
€627 EUR
$701 USD
View
A
Retailer 3
-
€632 EUR
View
A
Retailer 4
-
€711 EUR
£626 GBP
View
A
Retailer 5
-
€964 EUR
$1,077 USD
View
A
Retailer 6
-
€1,316 EUR
$1,471 USD
View
B+
Retailer 7
-
€1,556 EUR
£1,369 GBP
View
B+
Retailer 8
-
€2,227 EUR
A$3,828 AUD
View
Most Expensive
B
Brilliant Earth
20359591A · Oct 31
€2,623 EUR
$2,930 USD
View
8 more retailers have this diamond
Prices start from €535 EURSave up to €2,087 EUR

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
€535 EUR