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Marquise|Lab Grown|IGI

0.51ct D FL Marquise Lab Grown Diamond

ID • D/FL • IGI LG818662694

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818662694

Diamond specifications and retailer prices

From £212 GBP
As of November 5, 2026
Save £869 GBP (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,081 GBP at Reve Diamonds · As of November 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818662694 or 818662694. Listed at 19 retailers as of November 4, 2026, with prices from £212 to £1,081, a £869 spread on the same certified stone. Reve Diamonds lists it at £1,081. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818662694
Dimensions8.39 × 4.18 × 2.49 mm
L/W Ratio2.01
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
8.39 mm4.18 mm0.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818662694
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 39°Culet: NoneDepth 59.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £438 GBP|Low: £212 GBP|High: £1,128 GBP|Avg: £579 GBP|-19.2%
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
Reve Diamonds
November 5, 2026
Retailer 6£212 GBP
Retailer 5£278 GBP
Retailer 2£288 GBP
Retailer 13£366 GBP
Retailer 4£368 GBP
Retailer 1£438 GBP
Retailer 7£445 GBP
Retailer 3£452 GBP
Retailer 11£471 GBP
Retailer 10£579 GBP
Retailer 9£796 GBP
Retailer 12£799 GBP
Retailer 8£942 GBP
Reve Diamonds£1,081 GBP

37 data points across 14 retailers

19 retailers£212 GBP to £1,081 GBP

A
Cheapest Retailer
-
£212 GBP
Final sale: no returns
Retailer 2
-
£224 GBP
View
Price last confirmed 28 days ago
Retailer 3
-
£260 GBP
View
Price last confirmed 37 days ago
Retailer 4
-
£274 GBP
View
Price last confirmed 41 days ago
Retailer 5
-
£278 GBP
View
Price last confirmed 24 days ago
Retailer 6
-
£278 GBP
View
Price last confirmed 33 days ago
A
Retailer 7
-
£288 GBP
View
B+
Retailer 8
-
£366 GBP
View
B+
Retailer 9
-
£368 GBP
View
B+
Retailer 10
-
£438 GBP
View
B+
Retailer 11
-
£445 GBP
View
Retailer 12
-
£452 GBP
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£471 GBP
View
B
Retailer 14
-
£579 GBP
View
B
Retailer 15
-
£796 GBP
View
B
Retailer 16
-
£799 GBP
View
Retailer 17
-
£894 GBP
View
Price last confirmed 36 days ago
B
Retailer 18
-
£942 GBP
View
Most Expensive
B
Reve Diamonds
A2873543F · Nov 4
£1,081 GBP
$1,456 USD
View
18 more retailers have this diamond
Prices start from £212 GBPSave up to £869 GBP

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
£212 GBP