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1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1539355495

Certificate GIA 1539355495

Diamond specifications and retailer prices

From HK$37,494 HKD
As of November 4, 2026
Save HK$19,950 HKD (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$57,444 HKD at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

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 GIA 1539355495. Listed at 12 retailers as of November 4, 2026, with prices from HK$37,494 to HK$57,444, a HK$19,950 spread on the same certified stone. Cape Diamonds lists it at HK$57,444. 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°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1539355495
Dimensions7.41 × 7.36 × 4.58 mm
L/W Ratio1.01
Cert comments
Additional clouds, pinpoints and surface graining are not shown.
Key to symbols
Crystal, Cloud, Feather
Top View
7.41 mm7.36 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539355495
Side View
Table 58.0%Crown 35°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 62.0%

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 4
Current: HK$57,444 HKD|Low: HK$37,494 HKD|High: HK$59,538 HKD|Avg: HK$46,827 HKD|-3.3%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3HK$37,494 HKD
Retailer 6HK$39,932 HKD
Retailer 5HK$44,689 HKD
Retailer 10HK$45,143 HKD
Retailer 7HK$45,167 HKD
Retailer 8HK$47,651 HKD
Retailer 9HK$47,651 HKD
Retailer 4HK$48,067 HKD
Retailer 2HK$48,263 HKD
Retailer 11HK$49,219 HKD
Cape DiamondsHK$57,444 HKD

44 data points across 11 retailers

12 retailersHK$37,494 HKD to HK$57,444 HKD

Retailer 1
-
HK$34,398 HKD
Price last confirmed 68 days ago
B+
Retailer 2
-
HK$37,494 HKD
View
B+
Retailer 3
-
HK$39,932 HKD
View
B+
Retailer 4
-
HK$44,689 HKD
View
B+
Retailer 5
-
HK$45,143 HKD
View
B+
Retailer 6
-
HK$45,167 HKD
View
B
Retailer 7
-
HK$47,651 HKD
View
B
Retailer 8
-
HK$47,651 HKD
View
B
Retailer 9
-
HK$48,067 HKD
View
B
Retailer 10
-
HK$48,263 HKD
View
B
Retailer 11
-
HK$49,219 HKD
View
Most Expensive
B
Cape Diamonds
cert_1539355495 · Nov 5
HK$57,444 HKD
ZAR 118,408 ZAR
View
11 more retailers have this diamond
Prices start from HK$37,494 HKDSave up to HK$19,950 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+
1.55ct Round
HK$37,494 HKD