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Marquise|Lab Grown|IGI

1.00ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818655779

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818655779

Diamond specifications and retailer prices

From €295 EUR
As of November 4, 2026
Save €1,250 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,544 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise 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 LG818655779 or 818655779. Listed at 12 retailers as of November 4, 2026, with prices from €295 to €1,544, a €1,250 spread on the same certified stone. Brilliant Earth lists it at €1,544. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818655779
Dimensions10.11 × 5.23 × 3.27 mm
L/W Ratio1.93
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
10.11 mm5.23 mm1.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818655779
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €1,544 EUR|Low: €295 EUR|High: €1,935 EUR|Avg: €765 EUR|-20.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8€295 EUR
Retailer 12€355 EUR
Retailer 7€422 EUR
Retailer 6€434 EUR
Retailer 9€457 EUR
Retailer 2€465 EUR
Retailer 11€498 EUR
Retailer 10€547 EUR
Retailer 4€855 EUR
Retailer 3€917 EUR
Retailer 5€1,005 EUR
Brilliant Earth€1,544 EUR

45 data points across 12 retailers

12 retailers€295 EUR to €1,544 EUR

A
Cheapest Retailer
-
€295 EUR
A
Retailer 2
-
€355 EUR
View
A
Retailer 3
-
€422 EUR
View
A
Retailer 4
-
€434 EUR
View
A
Retailer 5
-
€457 EUR
View
A
Retailer 6
-
€465 EUR
View
A
Retailer 7
-
€498 EUR
View
A
Retailer 8
-
€547 EUR
View
B+
Retailer 9
-
€855 EUR
View
B+
Retailer 10
-
€917 EUR
View
B+
Retailer 11
-
€1,005 EUR
View
Most Expensive
B
Brilliant Earth
21359035A · Nov 4
€1,544 EUR
$1,740 USD
View
11 more retailers have this diamond
Prices start from €295 EURSave up to €1,250 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
1.00ct Marquise
€295 EUR