Marquise|Lab Grown|IGI

0.51ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG818657644

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818657644

Diamond specifications and retailer prices

From €483 EUR
$540 USD
As of October 30, 2026
14 retailers carry this diamond
Most expensive: €920 EUR at Reve Diamonds · As of October 4, 2026
View at Reve Diamonds

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 LG818657644 or 818657644. Listed at 14 retailers as of October 30, 2026. 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 angle34.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818657644
Dimensions8.17 × 4.22 × 2.60 mm
L/W Ratio1.94
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
8.17 mm4.22 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818657644
Side View
Table 58.0%Crown 34.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 61.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: €289 EUR|Low: €148 EUR|High: €920 EUR|Avg: €400 EUR|+2.3%
Retailer 1
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
Reve Diamonds
October 7, 2026
Retailer 5€148 EUR
Retailer 2€162 EUR
Retailer 13€164 EUR
Retailer 6€233 EUR
Retailer 9€279 EUR
Retailer 1€289 EUR
Retailer 10€297 EUR
Retailer 7€305 EUR
Retailer 4€329 EUR
Retailer 12€407 EUR
Retailer 16€418 EUR
Retailer 3€432 EUR
Retailer 11€483 EUR
Retailer 14€504 EUR
Retailer 8€577 EUR
Retailer 15€776 EUR
Reve Diamonds€920 EUR

17 data points across 17 retailers

14 retailers

Retailer 1
-
€127 EUR
$142 USD
Price last confirmed 30 days ago
Retailer 2
-
€154 EUR
$172 USD
View
Price last confirmed 33 days ago
Retailer 3
-
€162 EUR
$181 USD
View
Price last confirmed 37 days ago
Retailer 4
-
€164 EUR
$183 USD
View
Price last confirmed 29 days ago
Retailer 5
-
€233 EUR
$260 USD
View
Price last confirmed 16 days ago
Retailer 6
-
€297 EUR
ZAR 5,359 ZAR
View
Price last confirmed 28 days ago
Retailer 7
-
€329 EUR
$368 USD
View
Price last confirmed 17 days ago
Retailer 8
-
€407 EUR
$455 USD
View
Price last confirmed 28 days ago
B+
Retailer 9
-
€483 EUR
$540 USD
View
Retailer 10
-
€504 EUR
$563 USD
View
Price last confirmed 27 days ago
Retailer 11
-
€528 EUR
$590 USD
View
Price last confirmed 32 days ago
Retailer 12
-
€577 EUR
$645 USD
View
Price last confirmed 26 days ago
Retailer 13
-
€776 EUR
£683 GBP
View
Price last confirmed 28 days ago
Most Expensive
Reve Diamonds
F840201B2 · Oct 4
€920 EUR
$1,027 USD
View
Price last confirmed 28 days ago
13 more retailers have this diamond
Prices start from €483 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.

B+
0.51ct Marquise
€483 EUR