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Radiant|Lab Grown|IGI

0.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG810611404

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG810611404

Diamond specifications and retailer prices

From £108 GBP
As of November 4, 2026
Save £620 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £728 GBP at Michael Trio · As of November 4, 2026
View at Michael Trio

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant 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 LG810611404 or 810611404. Listed at 18 retailers as of November 4, 2026, with prices from £108 to £728, a £620 spread on the same certified stone. Michael Trio lists it at £728. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle32.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810611404
Dimensions6.26 × 3.89 × 2.50 mm
L/W Ratio1.61
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.26 mm3.89 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810611404
Side View
Table 65.0%Crown 40.6°Girdle: MediumPavilion 32.3°Culet: NoneDepth 64.3%

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: Nov 4
Current: £728 GBP|Low: £108 GBP|High: £739 GBP|Avg: £309 GBP|-1.5%
Michael Trio
Retailer 2
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Retailer 12
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Retailer 18
November 4, 2026
Retailer 2£108 GBP
Retailer 17£120 GBP
Retailer 14£125 GBP
Retailer 16£134 GBP
Retailer 9£137 GBP
Retailer 12£181 GBP
Retailer 6£229 GBP
Retailer 13£229 GBP
Retailer 4£244 GBP
Retailer 8£252 GBP
Retailer 3£343 GBP
Retailer 7£356 GBP
Retailer 10£370 GBP
Retailer 11£430 GBP
Retailer 15£455 GBP
Retailer 18£471 GBP
Retailer 5£629 GBP
Michael Trio£728 GBP

21 data points across 18 retailers

18 retailers£108 GBP to £728 GBP

A+
Cheapest Retailer
-
£108 GBP
A
Retailer 2
-
£120 GBP
View
Final sale: no returns
A
Retailer 3
-
£125 GBP
View
A
Retailer 4
-
£134 GBP
View
Retailer 5
-
£137 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£181 GBP
View
A
Retailer 7
-
£229 GBP
View
A
Retailer 8
-
£229 GBP
View
A
Retailer 9
-
£244 GBP
View
A
Retailer 10
-
£252 GBP
View
B+
Retailer 11
-
£343 GBP
View
B+
Retailer 12
-
£356 GBP
View
Retailer 13
-
£370 GBP
View
Price last confirmed 11 days ago
B+
Retailer 14
-
£430 GBP
View
B
Retailer 15
-
£455 GBP
View
B+
Retailer 16
-
£471 GBP
View
B
Retailer 17
-
£629 GBP
View
Most Expensive
B
Michael Trio
1233249693 · Nov 4
£728 GBP
SGD 1,329 SGD
View
17 more retailers have this diamond
Prices start from £108 GBPSave up to £620 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 Radiant
£108 GBP