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Round|Natural|IGI

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 722558075

Shape and cutting style on the report: Round brilliant

Certificate IGI 722558075

Diamond specifications and retailer prices

From HK$19,296 HKD
As of November 6, 2026
Save HK$21,929 HKD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$43,067 HKD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 722558075. Listed at 20 retailers as of November 4, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 722558075
Dimensions7.42 × 7.38 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.42 mm7.38 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 722558075
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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 6
Current: HK$19,296 HKD|Low: HK$19,296 HKD|High: HK$41,828 HKD|Avg: HK$28,286 HKD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1HK$19,296 HKD
Retailer 8HK$22,141 HKD
Retailer 3HK$25,887 HKD
Retailer 5HK$28,364 HKD
Retailer 4HK$28,771 HKD
Retailer 2HK$29,359 HKD
Retailer 6HK$30,166 HKD
Retailer 7HK$41,225 HKD

28 data points across 8 retailers

20 retailersHK$19,296 HKD to HK$41,225 HKD

A
Cheapest Retailer
-
HK$19,296 HKD
A
Retailer 2
-
HK$22,133 HKD
View
A
Retailer 3
-
HK$22,141 HKD
View
Retailer 4
-
HK$22,305 HKD
View
Price last confirmed 95 days ago
A
Retailer 5
-
HK$22,744 HKD
View
Retailer 6
-
HK$24,719 HKD
View
Price last confirmed 50 days ago
Retailer 7
-
HK$24,719 HKD
View
Price last confirmed 29 days ago
Retailer 8
-
HK$24,719 HKD
View
Price last confirmed 25 days ago
Retailer 9
-
HK$25,667 HKD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
HK$25,840 HKD
View
A
Retailer 11
-
HK$25,887 HKD
View
A
Retailer 12
-
HK$28,364 HKD
View
Retailer 13
-
HK$28,520 HKD
View
Price last confirmed 48 days ago
Retailer 14
-
HK$28,520 HKD
View
Price last confirmed 28 days ago
A
Retailer 15
-
HK$28,771 HKD
View
A
Retailer 16
-
HK$29,359 HKD
View
B+
Retailer 17
-
HK$30,166 HKD
View
B
Retailer 18
-
HK$41,225 HKD
View
Retailer 19
-
HK$43,067 HKD
View
Price last confirmed 49 days ago
Most Expensive
NZ Jewellers
753a8e01-ae61-4b72-9041-dc0ad0139ff6 · Sep 26
HK$43,067 HKD
$5,495 USD
View
Price last confirmed 40 days ago
19 more retailers have this diamond
Prices start from HK$19,296 HKDSave up to HK$21,929 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.

A
1.55ct Round
HK$19,296 HKD