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Cushion|Lab Grown|IGI

1.09ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG818663196

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG818663196

Diamond specifications and retailer prices

From €338 EUR
$378 USD
As of October 30, 2026
Save €1,416 EUR (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,754 EUR 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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818663196 or 818663196. Listed at 15 retailers as of October 30, 2026, with prices from €338 to €1,754, a €1,416 spread on the same certified stone. Brilliant Earth lists it at €1,754. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663196
Dimensions5.98 × 5.97 × 4.01 mm
L/W Ratio1.00
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
5.98 mm5.97 mm1.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663196
Side View
Table 60.0%Crown 35.2°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 67.2%

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 30
Current: €1,754 EUR|Low: €338 EUR|High: €2,032 EUR|Avg: €908 EUR|-13.7%
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 31, 2026
Retailer 15€338 EUR
Retailer 9€398 EUR
Retailer 6€421 EUR
Retailer 8€568 EUR
Retailer 3€606 EUR
Retailer 10€611 EUR
Retailer 14€615 EUR
Retailer 12€645 EUR
Retailer 5€657 EUR
Retailer 2€673 EUR
Retailer 4€1,246 EUR
Retailer 7€1,249 EUR
Retailer 13€1,463 EUR
Retailer 11€1,513 EUR
Brilliant Earth€1,754 EUR

36 data points across 15 retailers

15 retailers€338 EUR to €1,754 EUR

A
Cheapest Retailer
-
€338 EUR
$378 USD
Final sale: no returns
A
Retailer 2
-
€398 EUR
£350 GBP
View
A
Retailer 3
-
€421 EUR
$470 USD
View
A
Retailer 4
-
€568 EUR
$635 USD
View
A
Retailer 5
-
€606 EUR
$677 USD
View
A
Retailer 6
-
€611 EUR
View
A
Retailer 7
-
€615 EUR
$687 USD
View
A
Retailer 8
-
€645 EUR
ZAR 11,646 ZAR
View
A
Retailer 9
-
€657 EUR
$734 USD
View
A
Retailer 10
-
€673 EUR
£592 GBP
View
B+
Retailer 11
-
€1,246 EUR
$1,392 USD
View
Retailer 12
-
€1,249 EUR
$1,395 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
€1,463 EUR
$1,635 USD
View
B+
Retailer 14
-
€1,513 EUR
£1,331 GBP
View
Most Expensive
B
Brilliant Earth
21242470A · Oct 30
€1,754 EUR
$1,960 USD
View
14 more retailers have this diamond
Prices start from €338 EURSave up to €1,416 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
€338 EUR