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0.51ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG842634199

Shape and cutting style on the report: Round brilliant

Certificate IGI LG842634199

Diamond specifications and retailer prices

From £153 GBP
$205 USD
As of November 1, 2026
Save £509 GBP (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £662 GBP at MOH London · As of November 1, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG842634199 or 842634199. Listed at 9 retailers as of November 1, 2026, with prices from £153 to £662, a £509 spread on the same certified stone. MOH London lists it at £662. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842634199
Dimensions5.09 × 5.12 × 3.17 mm
L/W Ratio1.01
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
5.09 mm5.12 mm0.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842634199
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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 1
Current: £662 GBP|Low: £153 GBP|High: £691 GBP|Avg: £290 GBP|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2£171 GBP
Retailer 6£185 GBP
Retailer 8£224 GBP
Retailer 7£246 GBP
Retailer 5£253 GBP
Retailer 3£263 GBP
Retailer 4£333 GBP
MOH London£662 GBP

29 data points across 8 retailers

9 retailers£153 GBP to £662 GBP

A
Cheapest Retailer
-
£153 GBP
$205 USD
B+
Retailer 2
-
£171 GBP
View
B+
Retailer 3
-
£185 GBP
$248 USD
View
Retailer 4
-
£224 GBP
$300 USD
View
Price last confirmed 12 days ago
B+
Retailer 5
-
£246 GBP
$330 USD
View
B+
Retailer 6
-
£253 GBP
$339 USD
View
B
Retailer 7
-
£263 GBP
$352 USD
View
B
Retailer 8
-
£333 GBP
$447 USD
View
Most Expensive
B
MOH London
LG842634199 · Nov 1
£662 GBP
View
8 more retailers have this diamond
Prices start from £153 GBPSave up to £509 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
£153 GBP