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Marquise|Lab Grown|IGI

0.51ct D FL Marquise Lab Grown Diamond

VG • D/FL • IGI LG845658670

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845658670

Diamond specifications and retailer prices

From £167 GBP
As of November 5, 2026
Save £724 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £891 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 very-good cut grade and certified by IGI LG845658670 or 845658670. Listed at 15 retailers as of November 4, 2026, with prices from £167 to £891, a £724 spread on the same certified stone. Reve Diamonds lists it at £891. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845658670
Dimensions7.99 × 4.13 × 2.59 mm
L/W Ratio1.93
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 mm4.13 mm0.51 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845658670
Side View
Table 59.0%Crown 35.1°Girdle: Slightly ThickPavilion 39.4°Culet: NoneDepth 62.7%

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: Nov 5
Current: £337 GBP|Low: £167 GBP|High: £891 GBP|Avg: £434 GBP|-0.4%
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
Reve Diamonds
November 5, 2026
Retailer 14£167 GBP
Retailer 8£174 GBP
Retailer 10£186 GBP
Retailer 2£209 GBP
Retailer 4£267 GBP
Retailer 3£322 GBP
Retailer 13£334 GBP
Retailer 1£337 GBP
Retailer 9£337 GBP
Retailer 6£504 GBP
Retailer 11£597 GBP
Retailer 12£600 GBP
Retailer 5£637 GBP
Retailer 7£869 GBP
Reve Diamonds£891 GBP

10 data points across 15 retailers

15 retailers£167 GBP to £891 GBP

A
Cheapest Retailer
-
£167 GBP
Final sale: no returns
A
Retailer 2
-
£174 GBP
View
A
Retailer 3
-
£186 GBP
View
A
Retailer 4
-
£209 GBP
View
A
Retailer 5
-
£267 GBP
View
B+
Retailer 6
-
£322 GBP
View
B+
Retailer 7
-
£334 GBP
View
B+
Retailer 8
-
£337 GBP
View
B+
Retailer 9
-
£337 GBP
View
B+
Retailer 10
-
£504 GBP
View
B
Retailer 11
-
£597 GBP
View
B
Retailer 12
-
£600 GBP
View
B
Retailer 13
-
£637 GBP
View
B
Retailer 14
-
£869 GBP
View
Most Expensive
B
Reve Diamonds
2828CD641 · Nov 4
£891 GBP
$1,199 USD
View
14 more retailers have this diamond
Prices start from £167 GBPSave up to £724 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
£167 GBP