Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG843611025

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG843611025

Diamond specifications and retailer prices

From $638 USD
As of October 28, 2026
Save $2,322 USD (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,960 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 LG843611025 or 843611025. Listed at 7 retailers as of October 28, 2026, with prices from $638 to $2,960, a $2,322 spread on the same certified stone. Brilliant Earth lists it at $2,960. 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 angle33.9°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843611025
Dimensions7.99 × 5.85 × 3.94 mm
L/W Ratio1.37
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
7.99 mm5.85 mm1.55 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843611025
Side View
Table 60.0%Crown 33.9°Girdle: MED-STKPavilion 32°Culet: NoneDepth 67.4%

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: Oct 28
Current: $822 USD|Low: $638 USD|High: $1,970 USD|Avg: $1,130 USD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 6$638 USD
Retailer 2$806 USD
Retailer 1$822 USD
Retailer 4$1,101 USD
Retailer 5$1,648 USD
Retailer 3$1,970 USD

16 data points across 6 retailers

7 retailers$638 USD to $2,960 USD

A
Cheapest Retailer
-
$638 USD
A
Retailer 2
-
$806 USD
€768 EUR
View
A
Retailer 3
-
$822 USD
£647 GBP
View
A
Retailer 4
-
$1,101 USD
View
B+
Retailer 5
-
$1,648 USD
View
B+
Retailer 6
-
$1,970 USD
£1,551 GBP
View
Most Expensive
B
Brilliant Earth
22193309A · Oct 29
$2,960 USD
View
6 more retailers have this diamond
Prices start from $638 USDSave up to $2,322 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
$638 USD