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Radiant|Lab Grown|IGI

0.51ct F VS1 Radiant Lab Grown Diamond

VG • F/VS1 • IGI LG588368554

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

Certificate IGI LG588368554

Diamond specifications and retailer prices

From £83 GBP
$111 USD
As of November 2, 2026
Save £645 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £857 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG588368554 or 588368554. Listed at 12 retailers as of October 31, 2026, with a 780% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG588368554
Dimensions5.15 × 4.09 × 3.08 mm
L/W Ratio1.26
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.15 mm4.09 mm0.51 ctF / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG588368554
Side View
Table 60.0%Crown 37.8°Girdle: MediumPavilion 39.1°Culet: NoneDepth 75.3%

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: Nov 2
Current: £857 GBP|Low: £83 GBP|High: £887 GBP|Avg: £312 GBP|-3.1%
MOH London
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
November 2, 2026
Retailer 7£83 GBP
Retailer 3£96 GBP
Retailer 12£110 GBP
Retailer 10£171 GBP
Retailer 5£180 GBP
Retailer 11£187 GBP
Retailer 4£203 GBP
Retailer 9£207 GBP
Retailer 8£248 GBP
Retailer 13£330 GBP
Retailer 2£368 GBP
Retailer 6£534 GBP
Retailer 14£728 GBP
MOH London£857 GBP

19 data points across 14 retailers

12 retailers£83 GBP to £728 GBP

A
Cheapest Retailer
-
£83 GBP
$111 USD
A
Retailer 2
-
£96 GBP
$129 USD
View
A
Retailer 3
-
£110 GBP
$147 USD
View
B+
Retailer 4
-
£171 GBP
$230 USD
View
B+
Retailer 5
-
£187 GBP
ZAR 4,046 ZAR
View
B+
Retailer 6
-
£203 GBP
$273 USD
View
B+
Retailer 7
-
£207 GBP
View
B+
Retailer 8
-
£248 GBP
View
B
Retailer 9
-
£330 GBP
$443 USD
View
B
Retailer 10
-
£368 GBP
$494 USD
View
B
Retailer 11
-
£728 GBP
$977 USD
View
Most Expensive
MOH London
LG588368554 · Nov 2
£857 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £83 GBPSave up to £645 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
£83 GBP