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Marquise|Lab Grown|IGI

1.51ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG812620850

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812620850

Diamond specifications and retailer prices

From €604 EUR
$675 USD
As of October 30, 2026
Save €2,315 EUR (79%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €2,919 EUR at MOH London · As of October 29, 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 LG812620850 or 812620850. Listed at 23 retailers as of October 29, 2026, with prices from €604 to €2,919, a €2,315 spread on the same certified stone. MOH London lists it at €2,919. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812620850
Dimensions11.80 × 6.03 × 3.64 mm
L/W Ratio1.96
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
11.80 mm6.03 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812620850
Side View
Table 61.0%Crown 34.3°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 60.4%

Caratlytics Score

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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: €2,919 EUR|Low: €528 EUR|High: €2,998 EUR|Avg: €1,505 EUR|+6.0%
MOH London
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 8€550 EUR
Retailer 4€604 EUR
Retailer 9€682 EUR
Retailer 10€682 EUR
Retailer 13€765 EUR
Retailer 17€942 EUR
Retailer 19€1,003 EUR
Retailer 6€1,036 EUR
Retailer 12€1,038 EUR
Retailer 16€1,150 EUR
Retailer 14€1,435 EUR
Retailer 15€1,558 EUR
Retailer 11€1,992 EUR
Retailer 3€2,030 EUR
Retailer 5€2,163 EUR
Retailer 7€2,171 EUR
Retailer 18€2,218 EUR
Retailer 2€2,435 EUR
MOH London€2,919 EUR

36 data points across 19 retailers

23 retailers€604 EUR to €2,919 EUR

Retailer 1
-
€550 EUR
$615 USD
Price last confirmed 23 days ago
A
Retailer 2
-
€604 EUR
$675 USD
View
Final sale: no returns
Retailer 3
-
€616 EUR
$688 USD
View
Price last confirmed 33 days ago
Retailer 4
-
€644 EUR
$720 USD
View
Price last confirmed 37 days ago
Retailer 5
-
€682 EUR
$762 USD
View
Price last confirmed 29 days ago
Retailer 6
-
€682 EUR
$762 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
€765 EUR
$855 USD
View
A
Retailer 8
-
€942 EUR
$1,052 USD
View
A
Retailer 9
-
€1,003 EUR
$1,120 USD
View
A
Retailer 10
-
€1,036 EUR
View
A
Retailer 11
-
€1,038 EUR
£913 GBP
View
A
Retailer 12
-
€1,150 EUR
ZAR 20,748 ZAR
View
A
Retailer 13
-
€1,435 EUR
$1,603 USD
View
B+
Retailer 14
-
€1,558 EUR
A$2,678 AUD
View
Retailer 15
-
€1,611 EUR
$1,800 USD
View
Price last confirmed 8 days ago
Retailer 16
-
€1,795 EUR
$2,005 USD
View
Price last confirmed 31 days ago
Retailer 17
-
€1,992 EUR
£1,752 GBP
View
Price last confirmed 20 days ago
B+
Retailer 18
-
€2,030 EUR
$2,268 USD
View
B+
Retailer 19
-
€2,163 EUR
$2,416 USD
View
B+
Retailer 20
-
€2,171 EUR
$2,425 USD
View
B+
Retailer 21
-
€2,218 EUR
$2,478 USD
View
B+
Retailer 22
-
€2,435 EUR
$2,720 USD
View
Most Expensive
B
MOH London
LG812620850 · Oct 29
€2,919 EUR
£2,568 GBP
View
22 more retailers have this diamond
Prices start from €604 EURSave up to €2,315 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
€604 EUR