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0.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 815638123

Shape and cutting style on the report: Round brilliant

Certificate IGI 815638123

Diamond specifications and retailer prices

From HK$4,593 HKD
As of November 6, 2026
Save HK$603 HKD (12%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$13,371 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 815638123. Listed at 9 retailers as of November 2, 2026, with a relatively tight 13% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 815638123
Dimensions5.31 × 5.34 × 3.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.31 mm5.34 mm0.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815638123
Side View
Table 60.0%Crown 32.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.3%

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: Nov 6
Current: HK$13,371 HKD|Low: HK$3,488 HKD|High: HK$13,371 HKD|Avg: HK$5,943 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5HK$3,488 HKD
Retailer 4HK$3,754 HKD
Retailer 2HK$4,522 HKD
Retailer 8HK$4,593 HKD
Retailer 9HK$5,118 HKD
Retailer 7HK$5,133 HKD
Retailer 6HK$5,196 HKD
Retailer 3HK$8,057 HKD
NZ JewellersHK$13,371 HKD

25 data points across 9 retailers

9 retailersHK$4,593 HKD to HK$5,196 HKD

Retailer 1
-
HK$3,488 HKD
Price last confirmed 9 days ago
Retailer 2
-
HK$3,754 HKD
View
Price last confirmed 9 days ago
Retailer 3
-
HK$4,522 HKD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
HK$4,593 HKD
View
B+
Retailer 5
-
HK$5,118 HKD
View
Retailer 6
-
HK$5,133 HKD
View
Price last confirmed 4 days ago
B+
Retailer 7
-
HK$5,196 HKD
View
Retailer 8
-
HK$8,057 HKD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
acccbea3-923f-4cf0-bcdc-3f6ec6a8bf14 · Oct 30
HK$13,371 HKD
$1,706 USD
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from HK$4,593 HKDSave up to HK$603 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+
0.55ct Round
HK$4,593 HKD