Cushion|Lab Grown|IGI

1.55ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG825659979

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825659979

Diamond specifications and retailer prices

From $735 USD
As of October 29, 2026
Save $2,515 USD (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,250 USD at Brilliant Earth · As of October 30, 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825659979 or 825659979. Listed at 15 retailers as of October 29, 2026, with prices from $735 to $3,250, a $2,515 spread on the same certified stone. Brilliant Earth lists it at $3,250. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.8°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825659979
Dimensions8.34 × 5.97 × 4.04 mm
L/W Ratio1.40
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
8.34 mm5.97 mm1.55 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825659979
Side View
Table 60.0%Crown 30.8°Girdle: MED-THKPavilion 36°Culet: NoneDepth 67.7%

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 29
Current: $3,250 USD|Low: $636 USD|High: $4,060 USD|Avg: $1,822 USD|-20.0%
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
Retailer 15
October 30, 2026
Retailer 6$636 USD
Retailer 15$735 USD
Retailer 9$958 USD
Retailer 8$985 USD
Retailer 5$986 USD
Retailer 11$1,093 USD
Retailer 3$1,137 USD
Retailer 14$1,483 USD
Retailer 4$1,859 USD
Retailer 12$2,065 USD
Retailer 7$2,069 USD
Retailer 2$2,285 USD
Retailer 10$2,670 USD
Retailer 13$2,675 USD
Brilliant Earth$3,250 USD

33 data points across 15 retailers

15 retailers$735 USD to $3,250 USD

Retailer 1
-
$636 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$735 USD
View
A
Retailer 3
-
$958 USD
€912 EUR
View
A
Retailer 4
-
$985 USD
£776 GBP
View
A
Retailer 5
-
$986 USD
View
A
Retailer 6
-
$1,093 USD
ZAR 17,657 ZAR
View
A
Retailer 7
-
$1,137 USD
View
A
Retailer 8
-
$1,483 USD
View
B+
Retailer 9
-
$1,859 USD
£1,464 GBP
View
B+
Retailer 10
-
$2,065 USD
SGD 2,790 SGD
View
B+
Retailer 11
-
$2,069 USD
View
B+
Retailer 12
-
$2,285 USD
View
B+
Retailer 13
-
$2,670 USD
£2,102 GBP
View
Retailer 14
-
$2,675 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21418429A · Oct 30
$3,250 USD
View
14 more retailers have this diamond
Prices start from $735 USDSave up to $2,515 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
$735 USD