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Round|Lab Grown|IGI

0.51ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG843690275

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843690275

Diamond specifications and retailer prices

From £91 GBP
As of November 5, 2026
Save £263 GBP (74%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £808 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843690275 or 843690275. Listed at 14 retailers as of November 4, 2026, with a 290% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843690275
Dimensions5.10 × 5.07 × 3.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.10 mm5.07 mm0.51 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843690275
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £808 GBP|Low: £103 GBP|High: £812 GBP|Avg: £265 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 11£103 GBP
Retailer 5£111 GBP
Retailer 4£132 GBP
Retailer 9£175 GBP
Retailer 7£180 GBP
Retailer 2£188 GBP
Retailer 6£218 GBP
Retailer 8£247 GBP
Retailer 12£279 GBP
Retailer 10£347 GBP
Retailer 3£354 GBP
MOH London£808 GBP

20 data points across 12 retailers

14 retailers£91 GBP to £354 GBP

A
Cheapest Retailer
-
£91 GBP
Retailer 2
-
£103 GBP
View
Price last confirmed 11 days ago
A
Retailer 3
-
£111 GBP
View
A
Retailer 4
-
£132 GBP
View
B+
Retailer 5
-
£175 GBP
View
B+
Retailer 6
-
£180 GBP
View
B+
Retailer 7
-
£188 GBP
View
B+
Retailer 8
-
£218 GBP
View
B+
Retailer 9
-
£247 GBP
View
B
Retailer 10
-
£279 GBP
View
B
Retailer 11
-
£311 GBP
View
B
Retailer 12
-
£347 GBP
View
B
Retailer 13
-
£354 GBP
View
Most Expensive
MOH London
LG843690275 · Nov 2
£808 GBP
View
Price under review
13 more retailers have this diamond
Prices start from £91 GBPSave up to £263 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 Round
£91 GBP