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Oval|Natural|IGI

0.51ct J SI1 Oval Natural Diamond

VG • J/SI1 • IGI 815673862

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815673862

Diamond specifications and retailer prices

From £250 GBP
As of November 6, 2026
Save £526 GBP (68%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £776 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815673862. Listed at 5 retailers as of November 1, 2026, with prices from £250 to £776, a £526 spread on the same certified stone. MOH London lists it at £776. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.8°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 815673862
Dimensions6.33 × 4.35 × 2.85 mm
L/W Ratio1.46
Girdle conditionFaceted
Top View
6.33 mm4.35 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 815673862
Side View
Table 58.0%Crown 40.8°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 65.5%

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 6
Current: £776 GBP|Low: £250 GBP|High: £821 GBP|Avg: £485 GBP|-4.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 3£250 GBP
Retailer 2£431 GBP
Retailer 5£462 GBP
Retailer 4£491 GBP
MOH London£776 GBP

46 data points across 5 retailers

5 retailers£250 GBP to £776 GBP

A
Cheapest Retailer
-
£250 GBP
B+
Retailer 2
-
£431 GBP
View
B
Retailer 3
-
£462 GBP
View
B
Retailer 4
-
£491 GBP
View
Most Expensive
B
MOH London
F7374746B · Nov 1
£776 GBP
View
4 more retailers have this diamond
Prices start from £250 GBPSave up to £526 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
£250 GBP