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Oval|Lab Grown|IGI

0.51ct F SI1 Oval Lab Grown Diamond

VG • F/SI1 • IGI LG851653367

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG851653367

Diamond specifications and retailer prices

From £61 GBP
As of November 5, 2026
Save £497 GBP (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £558 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG851653367 or 851653367. Listed at 9 retailers as of November 2, 2026, with prices from £61 to £558, a £497 spread on the same certified stone. MOH London lists it at £558. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.8°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851653367
Dimensions6.27 × 4.47 × 2.88 mm
L/W Ratio1.40
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
6.27 mm4.47 mm0.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG851653367
Side View
Table 57.0%Crown 31.8°Girdle: MED-STKPavilion 41.7°CuletDepth 64.4%

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 5
Current: £558 GBP|Low: £61 GBP|High: £558 GBP|Avg: £210 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£61 GBP
Retailer 9£71 GBP
Retailer 3£81 GBP
Retailer 2£133 GBP
Retailer 6£166 GBP
Retailer 4£183 GBP
Retailer 8£244 GBP
Retailer 5£272 GBP
MOH London£558 GBP

5 data points across 9 retailers

9 retailers£61 GBP to £558 GBP

A
Cheapest Retailer
-
£61 GBP
B+
Retailer 2
-
£71 GBP
View
B+
Retailer 3
-
£81 GBP
View
A
Retailer 4
-
£133 GBP
View
B+
Retailer 5
-
£166 GBP
View
B+
Retailer 6
-
£183 GBP
View
B+
Retailer 7
-
£244 GBP
View
B+
Retailer 8
-
£272 GBP
View
Most Expensive
B
MOH London
LG851653367 · Nov 2
£558 GBP
View
8 more retailers have this diamond
Prices start from £61 GBPSave up to £497 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 Oval
£61 GBP