Marquise|Lab Grown|IGI

0.51ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG800675315

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG800675315

Diamond specifications and retailer prices

From €287 EUR
£252 GBP
As of October 31, 2026
Save €294 EUR (51%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €776 EUR at MOH London · As of October 21, 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 LG800675315 or 800675315. Listed at 9 retailers as of October 31, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800675315
Dimensions7.99 × 4.22 × 2.67 mm
L/W Ratio1.89
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
7.99 mm4.22 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800675315
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 40.2°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
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 31
Current: €776 EUR|Low: €273 EUR|High: €782 EUR|Avg: €444 EUR|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5€278 EUR
Retailer 2€287 EUR
Retailer 6€303 EUR
Retailer 7€305 EUR
Retailer 8€366 EUR
Retailer 4€501 EUR
Retailer 9€518 EUR
Retailer 3€576 EUR
Retailer 10€581 EUR
MOH London€776 EUR

42 data points across 10 retailers

9 retailers€287 EUR to €581 EUR

A
Cheapest Retailer
-
€287 EUR
£252 GBP
A
Retailer 2
-
€303 EUR
$339 USD
View
A
Retailer 3
-
€305 EUR
$341 USD
View
A
Retailer 4
-
€366 EUR
$409 USD
View
Retailer 5
-
€501 EUR
$560 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
€529 EUR
$591 USD
View
B+
Retailer 7
-
€576 EUR
A$990 AUD
View
B+
Retailer 8
-
€581 EUR
$649 USD
View
Most Expensive
MOH London
LG800675315 · Oct 21
€776 EUR
£683 GBP
View
Price last confirmed 11 days ago
8 more retailers have this diamond
Prices start from €287 EURSave up to €294 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
€287 EUR