Cushion|Lab Grown|IGI

1.09ct E FL Cushion Lab Grown Diamond

GD • E/FL • IGI LG840635024

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840635024

Diamond specifications and retailer prices

From $412 USD
£325 GBP
As of October 29, 2026
Save $1,568 USD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,980 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG840635024 or 840635024. Listed at 14 retailers as of October 29, 2026, with prices from $412 to $1,980, a $1,568 spread on the same certified stone. Brilliant Earth lists it at $1,980. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
E
Color
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635024
Dimensions7.59 × 5.18 × 3.47 mm
L/W Ratio1.47
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
7.59 mm5.18 mm1.09 ctE / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635024
Side View
Table 63.0%Crown 35.9°Girdle: STK-THKPavilion 35.7°Culet: NoneDepth 67.0%

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: $1,980 USD|Low: $410 USD|High: $2,200 USD|Avg: $1,114 USD|-10.0%
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
October 29, 2026
Retailer 9$412 USD
Retailer 11$585 USD
Retailer 13$629 USD
Retailer 3$631 USD
Retailer 7$649 USD
Retailer 10$666 USD
Retailer 12$680 USD
Retailer 2$689 USD
Retailer 5$1,061 USD
Retailer 14$1,293 USD
Retailer 6$1,395 USD
Retailer 8$1,562 USD
Retailer 4$1,944 USD
Brilliant Earth$1,980 USD

13 data points across 14 retailers

14 retailers$412 USD to $1,980 USD

A
Cheapest Retailer
-
$412 USD
£325 GBP
A
Retailer 2
-
$585 USD
View
A
Retailer 3
-
$629 USD
View
A
Retailer 4
-
$631 USD
View
A
Retailer 5
-
$649 USD
€618 EUR
View
A
Retailer 6
-
$666 USD
ZAR 10,764 ZAR
View
A
Retailer 7
-
$680 USD
View
A
Retailer 8
-
$689 USD
£542 GBP
View
B+
Retailer 9
-
$1,061 USD
SGD 1,434 SGD
View
B+
Retailer 10
-
$1,293 USD
View
Retailer 11
-
$1,395 USD
View
Price last confirmed 11 days ago
B
Retailer 12
-
$1,562 USD
£1,230 GBP
View
B
Retailer 13
-
$1,944 USD
View
Most Expensive
B
Brilliant Earth
21861710A · Oct 29
$1,980 USD
View
13 more retailers have this diamond
Prices start from $412 USDSave up to $1,568 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
1.09ct Cushion
$412 USD