Radiant|Natural|IGI

0.31ct J IF Radiant Natural Diamond

VG • J/IF • IGI 831668590

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 831668590

Diamond specifications and retailer prices

From £257 GBP
$345 USD
As of November 1, 2026
Save £400 GBP (61%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,093 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.31ct natural radiant diamond

This 0.31ct natural radiant sits in the sub-half-carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI 831668590. Listed at 13 retailers as of November 1, 2026, with a 155% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle21.1°
Pavilion angle37.6°
OriginNatural
Grading LabIGI
CertificateIGI 831668590
Dimensions4.75 × 3.42 × 2.35 mm
L/W Ratio1.39
Top View
4.75 mm3.42 mm0.31 ctJ / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 831668590
Side View
Table 64.0%Crown 21.1°Girdle: Slightly ThickPavilion 37.6°Culet: NoneDepth 68.7%

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: Nov 1
Current: £1,093 GBP|Low: £257 GBP|High: £1,117 GBP|Avg: £457 GBP|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 2£257 GBP
Retailer 5£285 GBP
Retailer 9£302 GBP
Retailer 3£307 GBP
Retailer 4£319 GBP
Retailer 7£359 GBP
Retailer 10£384 GBP
Retailer 12£401 GBP
Retailer 13£442 GBP
Retailer 11£462 GBP
Retailer 6£520 GBP
Retailer 8£658 GBP
NZ Jewellers£1,093 GBP

22 data points across 13 retailers

13 retailers£257 GBP to £658 GBP

A
Cheapest Retailer
-
£257 GBP
$345 USD
B+
Retailer 2
-
£285 GBP
$382 USD
View
B+
Retailer 3
-
£302 GBP
SGD 546 SGD
View
B+
Retailer 4
-
£307 GBP
$412 USD
View
B+
Retailer 5
-
£319 GBP
$427 USD
View
B+
Retailer 6
-
£359 GBP
View
B
Retailer 7
-
£384 GBP
$514 USD
View
B+
Retailer 8
-
£401 GBP
$537 USD
View
B
Retailer 9
-
£442 GBP
ZAR 9,567 ZAR
View
B
Retailer 10
-
£462 GBP
€590 EUR
View
B
Retailer 11
-
£520 GBP
View
B
Retailer 12
-
£658 GBP
View
Most Expensive
NZ Jewellers
8da9cf63-8ee3-4be3-aad4-93071c630ffb · Oct 30
£1,093 GBP
$1,464 USD
View
Price under review
12 more retailers have this diamond
Prices start from £257 GBPSave up to £400 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 Radiant
£257 GBP