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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG818684380

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818684380

Diamond specifications and retailer prices

From €779 EUR
HK$6,800 HKD
As of October 31, 2026
Save €2,165 EUR (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,944 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818684380 or 818684380. Listed at 13 retailers as of October 26, 2026, with prices from €779 to €2,944, a €2,165 spread on the same certified stone. MOH London lists it at €2,944. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818684380
Dimensions11.84 × 6.08 × 3.65 mm
L/W Ratio1.95
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
11.84 mm6.08 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818684380
Side View
Table 61.0%Crown 33.7°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 60.0%

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: €2,944 EUR|Low: €775 EUR|High: €2,976 EUR|Avg: €1,796 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 7€779 EUR
Retailer 10€958 EUR
Retailer 11€1,005 EUR
Retailer 6€1,035 EUR
Retailer 2€1,060 EUR
Retailer 3€1,606 EUR
Retailer 8€2,144 EUR
Retailer 4€2,189 EUR
Retailer 9€2,195 EUR
Retailer 5€2,300 EUR
Retailer 12€2,371 EUR
MOH London€2,944 EUR

32 data points across 12 retailers

13 retailers€779 EUR to €2,944 EUR

A
Cheapest Retailer
-
€779 EUR
HK$6,800 HKD
A
Retailer 2
-
€958 EUR
$1,070 USD
View
A
Retailer 3
-
€1,005 EUR
$1,123 USD
View
A
Retailer 4
-
€1,035 EUR
View
A
Retailer 5
-
€1,060 EUR
£933 GBP
View
A
Retailer 6
-
€1,280 EUR
$1,430 USD
View
Retailer 7
-
€1,606 EUR
$1,794 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
€2,144 EUR
$2,395 USD
View
B+
Retailer 9
-
€2,189 EUR
$2,446 USD
View
Retailer 10
-
€2,195 EUR
A$3,773 AUD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
€2,300 EUR
$2,570 USD
View
B
Retailer 12
-
€2,371 EUR
$2,649 USD
View
Most Expensive
B
MOH London
LG818684380 · Oct 26
€2,944 EUR
£2,590 GBP
View
12 more retailers have this diamond
Prices start from €779 EURSave up to €2,165 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
1.51ct Marquise
€779 EUR