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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 €298 EUR
HK$2,600 HKD
As of October 31, 2026
Save €1,260 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,557 EUR at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from €298 to €1,557, a €1,260 spread on the same certified stone. Brilliant Earth lists it at €1,557. 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
Color
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: Oct 31
Current: €1,557 EUR|Low: €298 EUR|High: €1,951 EUR|Avg: €804 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 1, 2026
Retailer 8€298 EUR
Retailer 12€358 EUR
Retailer 6€426 EUR
Retailer 7€436 EUR
Retailer 9€461 EUR
Retailer 5€474 EUR
Retailer 11€502 EUR
Retailer 10€551 EUR
Retailer 4€862 EUR
Retailer 3€925 EUR
Retailer 2€1,016 EUR
Brilliant Earth€1,557 EUR

45 data points across 12 retailers

12 retailers€298 EUR to €1,557 EUR

A
Cheapest Retailer
-
€298 EUR
HK$2,600 HKD
A
Retailer 2
-
€358 EUR
$400 USD
View
A
Retailer 3
-
€426 EUR
View
A
Retailer 4
-
€436 EUR
ZAR 7,866 ZAR
View
A
Retailer 5
-
€461 EUR
$515 USD
View
A
Retailer 6
-
€474 EUR
£417 GBP
View
A
Retailer 7
-
€502 EUR
$561 USD
View
Retailer 8
-
€551 EUR
$616 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
€862 EUR
$964 USD
View
B+
Retailer 10
-
€925 EUR
$1,033 USD
View
B+
Retailer 11
-
€1,016 EUR
£894 GBP
View
Most Expensive
B
Brilliant Earth
21359035A · Oct 31
€1,557 EUR
$1,740 USD
View
11 more retailers have this diamond
Prices start from €298 EURSave up to €1,260 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
€298 EUR