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Oval|Natural|IGI

0.31ct J SI1 Oval Natural Diamond

VG • J/SI1 • IGI 810632128

Shape and cutting style on the report: Oval brilliant

Certificate IGI 810632128

Diamond specifications and retailer prices

From £117 GBP
$157 USD
As of October 29, 2026
Save £412 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £529 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.31ct natural oval diamond

This 0.31ct natural oval sits in the sub-half-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 810632128. Listed at 11 retailers as of October 29, 2026, with prices from £117 to £529, a £412 spread on the same certified stone. NZ Jewellers lists it at £529. 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

0.31
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle40.4°
Pavilion angle39.8°
OriginNatural
Grading LabIGI
CertificateIGI 810632128
Dimensions5.39 × 3.64 × 2.41 mm
L/W Ratio1.48
Girdle conditionFaceted
Top View
5.39 mm3.64 mm0.31 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 810632128
Side View
Table 57.0%Crown 40.4°Girdle: THN-THKPavilion 39.8°Culet: NoneDepth 66.2%

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: Oct 29
Current: £529 GBP|Low: £117 GBP|High: £542 GBP|Avg: £222 GBP|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11£117 GBP
Retailer 9£126 GBP
Retailer 10£131 GBP
Retailer 5£157 GBP
Retailer 2£172 GBP
Retailer 6£181 GBP
Retailer 7£214 GBP
Retailer 8£237 GBP
Retailer 4£257 GBP
Retailer 3£271 GBP
NZ Jewellers£529 GBP

28 data points across 11 retailers

11 retailers£117 GBP to £529 GBP

A
Cheapest Retailer
-
£117 GBP
$157 USD
A
Retailer 2
-
£126 GBP
$169 USD
View
B+
Retailer 3
-
£131 GBP
$175 USD
View
B+
Retailer 4
-
£157 GBP
$211 USD
View
B+
Retailer 5
-
£172 GBP
View
B+
Retailer 6
-
£181 GBP
ZAR 3,921 ZAR
View
B+
Retailer 7
-
£214 GBP
$286 USD
View
B+
Retailer 8
-
£237 GBP
View
B
Retailer 9
-
£257 GBP
€328 EUR
View
B
Retailer 10
-
£271 GBP
View
Most Expensive
C
NZ Jewellers
daf122e2-19aa-43cc-8de9-1d561d7341f8 · Oct 30
£529 GBP
$709 USD
View
10 more retailers have this diamond
Prices start from £117 GBPSave up to £412 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
0.31ct Oval
£117 GBP