Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846663309

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846663309

Diamond specifications and retailer prices

From $444 USD
£349 GBP
As of October 30, 2026
Save $1,916 USD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,360 USD at Brilliant Earth · As of October 30, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663309 or 846663309. Listed at 8 retailers as of October 30, 2026, with prices from $444 to $2,360, a $1,916 spread on the same certified stone. Brilliant Earth lists it at $2,360. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663309
Dimensions7.98 × 5.20 × 3.48 mm
L/W Ratio1.53
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
7.98 mm5.20 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663309
Side View
Table 63.0%Crown 33.7°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 66.9%

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: Oct 30
Current: $2,360 USD|Low: $444 USD|High: $2,840 USD|Avg: $1,134 USD|-16.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 3$444 USD
Retailer 4$625 USD
Retailer 2$691 USD
Retailer 6$720 USD
Retailer 7$864 USD
Retailer 5$1,868 USD
Retailer 8$2,011 USD
Brilliant Earth$2,360 USD

5 data points across 8 retailers

8 retailers$444 USD to $2,360 USD

A
Cheapest Retailer
-
$444 USD
£349 GBP
A
Retailer 2
-
$625 USD
View
A
Retailer 3
-
$691 USD
View
A
Retailer 4
-
$720 USD
View
A
Retailer 5
-
$864 USD
€823 EUR
View
B
Retailer 6
-
$1,868 USD
£1,471 GBP
View
B
Retailer 7
-
$2,011 USD
View
Most Expensive
B
Brilliant Earth
22315344A · Oct 30
$2,360 USD
View
7 more retailers have this diamond
Prices start from $444 USDSave up to $1,916 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
$444 USD