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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816624103

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

Certificate IGI LG816624103

Diamond specifications and retailer prices

From €352 EUR
$393 USD
As of November 1, 2026
Save €1,546 EUR (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,898 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 LG816624103 or 816624103. Listed at 13 retailers as of October 31, 2026, with prices from €352 to €1,898, a €1,546 spread on the same certified stone. Brilliant Earth lists it at €1,898. 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 angle35.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816624103
Dimensions6.25 × 6.10 × 3.89 mm
L/W Ratio1.02
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
6.25 mm6.10 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816624103
Side View
Table 61.0%Crown 35.2°Girdle: THN-STKPavilion 39.8°Culet: NoneDepth 63.8%

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: €1,898 EUR|Low: €259 EUR|High: €2,542 EUR|Avg: €958 EUR|-25.4%
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
November 1, 2026
Retailer 11€352 EUR
Retailer 4€403 EUR
Retailer 7€591 EUR
Retailer 10€608 EUR
Retailer 13€628 EUR
Retailer 6€630 EUR
Retailer 8€672 EUR
Retailer 2€704 EUR
Retailer 3€1,294 EUR
Retailer 5€1,298 EUR
Retailer 9€1,504 EUR
Retailer 12€1,530 EUR
Brilliant Earth€1,898 EUR

36 data points across 13 retailers

13 retailers€352 EUR to €1,898 EUR

A
Cheapest Retailer
-
€352 EUR
$393 USD
Final sale: no returns
Retailer 2
-
€403 EUR
$450 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
€591 EUR
$660 USD
View
A
Retailer 4
-
€608 EUR
$679 USD
View
A
Retailer 5
-
€628 EUR
$702 USD
View
A
Retailer 6
-
€630 EUR
View
A
Retailer 7
-
€672 EUR
ZAR 12,131 ZAR
View
A
Retailer 8
-
€704 EUR
£619 GBP
View
B+
Retailer 9
-
€1,294 EUR
$1,446 USD
View
Retailer 10
-
€1,298 EUR
$1,450 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
€1,504 EUR
$1,680 USD
View
B+
Retailer 12
-
€1,530 EUR
£1,346 GBP
View
Most Expensive
B
Brilliant Earth
21018849A · Oct 31
€1,898 EUR
$2,120 USD
View
12 more retailers have this diamond
Prices start from €352 EURSave up to €1,546 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
€352 EUR