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Round|Natural|IGI

0.31ct J I1 Round Natural Diamond

EX • J/I1 • IGI 320851903

Shape and cutting style on the report: Round brilliant

Certificate IGI 320851903

Diamond specifications and retailer prices

From $245 AUD
$172 USD
As of October 31, 2026
Save $863 AUD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,108 AUD 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 top-tier cut grade and certified by IGI 320851903. Listed at 8 retailers as of October 31, 2026, with prices from $245 to $1,108, a $863 spread on the same certified stone. NZ Jewellers lists it at $1,108. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.31
Carat
J
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 320851903
Dimensions4.39 × 4.43 × 2.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.39 mm4.43 mm0.31 ctJ / I1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI 320851903
Side View
Table 62.5%Crown 34.3°Girdle: UNDPavilion 40.4°Culet: NoneDepth 58.8%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $441 AUD|Low: $237 AUD|High: $445 AUD|Avg: $340 AUD|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2$239 AUD
Retailer 3$311 AUD
Retailer 4$373 AUD
Retailer 1$441 AUD

18 data points across 4 retailers

8 retailers$245 AUD to $1,108 AUD

B+
Cheapest Retailer
-
$245 AUD
$172 USD
B+
Retailer 2
-
$263 AUD
$185 USD
View
B+
Retailer 3
-
$273 AUD
$192 USD
View
B+
Retailer 4
-
$301 AUD
$212 USD
View
B+
Retailer 5
-
$311 AUD
$218 USD
View
B+
Retailer 6
-
$329 AUD
$231 USD
View
B
Retailer 7
-
$441 AUD
€295 EUR
View
Most Expensive
C
NZ Jewellers
6201fe03-5bad-4a38-991d-5938059b446a · Nov 2
$1,108 AUD
$778 USD
View
7 more retailers have this diamond
Prices start from $245 AUDSave up to $863 AUD

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
$245 AUD