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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 HK$1,349 HKD
$172 USD
As of October 31, 2026
Save HK$4,754 HKD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$6,104 HKD at NZ Jewellers · As of October 30, 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 30, 2026, with prices from HK$1,349 to HK$6,104, a HK$4,754 spread on the same certified stone. NZ Jewellers lists it at HK$6,104. 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
undefined
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: HK$2,430 HKD|Low: HK$1,305 HKD|High: HK$2,455 HKD|Avg: HK$1,872 HKD|+3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2HK$1,317 HKD
Retailer 3HK$1,714 HKD
Retailer 4HK$2,057 HKD
Retailer 1HK$2,430 HKD

18 data points across 4 retailers

8 retailersHK$1,349 HKD to HK$6,104 HKD

B+
Cheapest Retailer
-
HK$1,349 HKD
$172 USD
B+
Retailer 2
-
HK$1,451 HKD
$185 USD
View
B+
Retailer 3
-
HK$1,506 HKD
$192 USD
View
B+
Retailer 4
-
HK$1,661 HKD
$212 USD
View
B+
Retailer 5
-
HK$1,714 HKD
$218 USD
View
B+
Retailer 6
-
HK$1,812 HKD
$231 USD
View
B
Retailer 7
-
HK$2,430 HKD
€295 EUR
View
Most Expensive
C
NZ Jewellers
6201fe03-5bad-4a38-991d-5938059b446a · Oct 30
HK$6,104 HKD
$778 USD
View
7 more retailers have this diamond
Prices start from HK$1,349 HKDSave up to HK$4,754 HKD

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
HK$1,349 HKD