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 $675 USD
As of October 28, 2026
Save $2,445 USD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,120 USD at Brilliant Earth · As of October 29, 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 8 retailers as of October 28, 2026, with prices from $675 to $3,120, a $2,445 spread on the same certified stone. Brilliant Earth lists it at $3,120. 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
Color
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 28
Current: $3,120 USD|Low: $675 USD|High: $3,150 USD|Avg: $1,501 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 6$675 USD
Retailer 2$822 USD
Retailer 3$881 USD
Retailer 7$1,101 USD
Retailer 8$1,649 USD
Retailer 4$1,972 USD
Retailer 5$2,355 USD
Brilliant Earth$3,120 USD

40 data points across 8 retailers

8 retailers$675 USD to $3,120 USD

A
Cheapest Retailer
-
$675 USD
A
Retailer 2
-
$822 USD
£648 GBP
View
A
Retailer 3
-
$881 USD
€839 EUR
View
A
Retailer 4
-
$1,101 USD
View
B+
Retailer 5
-
$1,649 USD
View
B+
Retailer 6
-
$1,972 USD
£1,553 GBP
View
B+
Retailer 7
-
$2,355 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21322734A · Oct 29
$3,120 USD
View
7 more retailers have this diamond
Prices start from $675 USDSave up to $2,445 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
$675 USD