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Marquise|Lab Grown|IGI

0.51ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG815611661

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG815611661

Diamond specifications and retailer prices

From €139 EUR
$155 USD
As of October 30, 2026
Save €666 EUR (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €805 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815611661 or 815611661. Listed at 18 retailers as of October 30, 2026, with prices from €139 to €805, a €666 spread on the same certified stone. MOH London lists it at €805. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815611661
Dimensions8.19 × 4.20 × 2.50 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
8.19 mm4.20 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815611661
Side View
Table 63.0%Crown 35.1°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 59.5%

Caratlytics Score

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A+
Exceptional
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: €805 EUR|Low: €139 EUR|High: €922 EUR|Avg: €372 EUR|-12.7%
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
November 2, 2026
Retailer 7€139 EUR
Retailer 3€156 EUR
Retailer 11€161 EUR
Retailer 15€172 EUR
Retailer 9€188 EUR
Retailer 18€195 EUR
Retailer 6€233 EUR
Retailer 2€299 EUR
Retailer 14€313 EUR
Retailer 8€321 EUR
Retailer 16€371 EUR
Retailer 13€403 EUR
Retailer 12€439 EUR
Retailer 4€472 EUR
Retailer 10€483 EUR
Retailer 17€553 EUR
Retailer 5€584 EUR
MOH London€805 EUR

20 data points across 18 retailers

18 retailers€139 EUR to €805 EUR

A+
Cheapest Retailer
-
€139 EUR
$155 USD
A
Retailer 2
-
€156 EUR
$174 USD
View
Final sale: no returns
A
Retailer 3
-
€161 EUR
$180 USD
View
A
Retailer 4
-
€172 EUR
$192 USD
View
Retailer 5
-
€188 EUR
$210 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
€195 EUR
HK$1,700 HKD
View
A
Retailer 7
-
€233 EUR
$260 USD
View
A
Retailer 8
-
€299 EUR
£263 GBP
View
A
Retailer 9
-
€313 EUR
ZAR 5,644 ZAR
View
A
Retailer 10
-
€321 EUR
View
A
Retailer 11
-
€371 EUR
$415 USD
View
A
Retailer 12
-
€403 EUR
$450 USD
View
B+
Retailer 13
-
€439 EUR
A$754 AUD
View
B+
Retailer 14
-
€472 EUR
SGD 713 SGD
View
Retailer 15
-
€483 EUR
$540 USD
View
Price last confirmed 11 days ago
B+
Retailer 16
-
€553 EUR
$618 USD
View
B+
Retailer 17
-
€584 EUR
$653 USD
View
Most Expensive
B
MOH London
LG815611661 · Nov 1
€805 EUR
£708 GBP
View
17 more retailers have this diamond
Prices start from €139 EURSave up to €666 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+
0.51ct Marquise
€139 EUR