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Round|Natural|IGI

0.31ct J I1 Round Natural Diamond

VG • J/I1 • IGI 629445052

Shape and cutting style on the report: Round brilliant

Certificate IGI 629445052

Diamond specifications and retailer prices

From £206 GBP
€263 EUR
As of November 1, 2026
Save £176 GBP (46%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £382 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 0.31ct natural round diamond

This 0.31ct natural round sits in the sub-half-carat band, graded J colour (near-colourless) and I1 clarity (included), with a very-good cut grade and certified by IGI 629445052. Listed at 2 retailers as of November 1, 2026, with prices from £206 to £382, a £176 spread on the same certified stone. NZ Jewellers lists it at £382. 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
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.3°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 629445052
Dimensions4.24 × 4.26 × 2.69 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
4.24 mm4.26 mm0.31 ctJ / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 629445052
Side View
Table 61.0%Crown 34.3°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £382 GBP|Low: £77 GBP|High: £393 GBP|Avg: £201 GBP|-2.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 4£77 GBP
Retailer 3£133 GBP
Retailer 2£206 GBP
NZ Jewellers£382 GBP

19 data points across 4 retailers

2 retailers£206 GBP to £382 GBP

B+
Cheapest Retailer
-
£206 GBP
€263 EUR
Most Expensive
C
NZ Jewellers
17fc5792-2455-4174-aac8-36a6d8ed7ebf · Nov 2
£382 GBP
$513 USD
View
1 more retailer has this diamond
Prices start from £206 GBPSave up to £176 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.

B+
0.31ct Round
£206 GBP