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Cushion|Lab Grown|IGI

1.05ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG818662839

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

Certificate IGI LG818662839

Diamond specifications and retailer prices

From €314 EUR
$351 USD
As of October 30, 2026
Save €1,333 EUR (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,647 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct 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 LG818662839 or 818662839. Listed at 14 retailers as of October 30, 2026, with prices from €314 to €1,647, a €1,333 spread on the same certified stone. Brilliant Earth lists it at €1,647. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818662839
Dimensions6.18 × 6.06 × 3.84 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
6.18 mm6.06 mm1.05 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818662839
Side View
Table 62.0%Crown 34.7°Girdle: MediumPavilion 40.6°Culet: NoneDepth 63.4%

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: €1,647 EUR|Low: €252 EUR|High: €1,915 EUR|Avg: €877 EUR|-14.0%
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 31, 2026
Retailer 12€314 EUR
Retailer 6€385 EUR
Retailer 7€528 EUR
Retailer 14€567 EUR
Retailer 8€570 EUR
Retailer 11€572 EUR
Retailer 9€599 EUR
Retailer 2€616 EUR
Retailer 4€630 EUR
Retailer 3€1,161 EUR
Retailer 5€1,199 EUR
Retailer 10€1,394 EUR
Retailer 13€1,398 EUR
Brilliant Earth€1,647 EUR

36 data points across 14 retailers

14 retailers€314 EUR to €1,647 EUR

A
Cheapest Retailer
-
€314 EUR
$351 USD
Final sale: no returns
Retailer 2
-
€385 EUR
$430 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
€528 EUR
$590 USD
View
A
Retailer 4
-
€567 EUR
$633 USD
View
A
Retailer 5
-
€570 EUR
View
A
Retailer 6
-
€572 EUR
$639 USD
View
A
Retailer 7
-
€599 EUR
ZAR 10,806 ZAR
View
A
Retailer 8
-
€616 EUR
£542 GBP
View
A
Retailer 9
-
€630 EUR
$704 USD
View
B+
Retailer 10
-
€1,161 EUR
$1,297 USD
View
Retailer 11
-
€1,199 EUR
$1,340 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
€1,394 EUR
$1,557 USD
View
B
Retailer 13
-
€1,398 EUR
£1,230 GBP
View
Most Expensive
B
Brilliant Earth
21242472A · Oct 30
€1,647 EUR
$1,840 USD
View
13 more retailers have this diamond
Prices start from €314 EURSave up to €1,333 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
1.05ct Cushion
€314 EUR