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 $612 NZD
$345 USD
As of November 1, 2026
Save $952 NZD (61%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,598 NZD 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: $2,598 NZD|Low: $612 NZD|High: $2,645 NZD|Avg: $1,072 NZD|-1.8%
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 2, 2026
Retailer 8$612 NZD
Retailer 5$678 NZD
Retailer 10$717 NZD
Retailer 3$731 NZD
Retailer 4$758 NZD
Retailer 7$860 NZD
Retailer 11$912 NZD
Retailer 12$953 NZD
Retailer 13$1,051 NZD
Retailer 6$1,101 NZD
Retailer 2$1,235 NZD
Retailer 9$1,564 NZD
NZ Jewellers$2,598 NZD

22 data points across 13 retailers

13 retailers$612 NZD to $1,564 NZD

A
Cheapest Retailer
-
$612 NZD
$345 USD
B+
Retailer 2
-
$678 NZD
$382 USD
View
B+
Retailer 3
-
$717 NZD
SGD 546 SGD
View
B+
Retailer 4
-
$731 NZD
$412 USD
View
B+
Retailer 5
-
$758 NZD
$427 USD
View
B
Retailer 6
-
$860 NZD
£382 GBP
View
B
Retailer 7
-
$912 NZD
$514 USD
View
B+
Retailer 8
-
$953 NZD
$537 USD
View
B
Retailer 9
-
$1,051 NZD
ZAR 9,567 ZAR
View
B
Retailer 10
-
$1,101 NZD
€591 EUR
View
B
Retailer 11
-
$1,235 NZD
£548 GBP
View
B
Retailer 12
-
$1,564 NZD
£694 GBP
View
Most Expensive
NZ Jewellers
8da9cf63-8ee3-4be3-aad4-93071c630ffb · Oct 30
$2,598 NZD
$1,464 USD
View
Price under review
12 more retailers have this diamond
Prices start from $612 NZDSave up to $952 NZD

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
$612 NZD