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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 €379 EUR
£333 GBP
As of November 1, 2026
Save €1,608 EUR (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €1,987 EUR at Brilliant Earth · As of October 31, 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 31, 2026, with prices from €379 to €1,987, a €1,608 spread on the same certified stone. Brilliant Earth lists it at €1,987. 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

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: Nov 1
Current: €1,987 EUR|Low: €379 EUR|High: €2,542 EUR|Avg: €1,009 EUR|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4€379 EUR
Retailer 5€506 EUR
Retailer 3€594 EUR
Retailer 6€624 EUR
Retailer 8€773 EUR
Retailer 2€1,474 EUR
Retailer 7€1,540 EUR
Brilliant Earth€1,987 EUR

7 data points across 8 retailers

8 retailers€379 EUR to €1,987 EUR

A
Cheapest Retailer
-
€379 EUR
£333 GBP
A
Retailer 2
-
€506 EUR
$565 USD
View
A
Retailer 3
-
€594 EUR
$664 USD
View
A
Retailer 4
-
€624 EUR
$697 USD
View
B+
Retailer 5
-
€773 EUR
View
B+
Retailer 6
-
€1,474 EUR
£1,297 GBP
View
B+
Retailer 7
-
€1,540 EUR
$1,721 USD
View
Most Expensive
B
Brilliant Earth
22315344A · Oct 31
€1,987 EUR
$2,220 USD
View
7 more retailers have this diamond
Prices start from €379 EURSave up to €1,608 EUR

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
€379 EUR