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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 5423535519

Certificate GIA 5423535519

Diamond specifications and retailer prices

From HK$13,737 HKD
As of November 6, 2026
Save HK$22,186 HKD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$35,923 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 5423535519. Listed at 20 retailers as of November 5, 2026, with prices from HK$13,737 to HK$35,923, a HK$22,186 spread on the same certified stone. NZ Jewellers lists it at HK$35,923. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423535519
Dimensions6.30 × 6.25 × 3.97 mm
L/W Ratio1.01
Top View
6.30 mm6.25 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5423535519
Side View
Table 57.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.3%

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$20,021 HKD|Low: HK$12,340 HKD|High: HK$30,463 HKD|Avg: HK$19,665 HKD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7HK$14,059 HKD
Retailer 9HK$14,365 HKD
Retailer 8HK$14,474 HKD
Retailer 2HK$16,287 HKD
Retailer 5HK$18,554 HKD
Retailer 1HK$20,021 HKD
Retailer 4HK$20,970 HKD
Retailer 10HK$21,127 HKD
Retailer 3HK$21,786 HKD
Retailer 6HK$30,016 HKD

42 data points across 10 retailers

20 retailersHK$13,737 HKD to HK$35,923 HKD

B+
Cheapest Retailer
-
HK$13,737 HKD
B+
Retailer 2
-
HK$14,027 HKD
View
B+
Retailer 3
-
HK$14,059 HKD
View
B+
Retailer 4
-
HK$14,365 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$14,474 HKD
View
B+
Retailer 6
-
HK$14,639 HKD
View
Retailer 7
-
HK$15,565 HKD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
HK$15,565 HKD
View
B
Retailer 9
-
HK$15,847 HKD
View
B+
Retailer 10
-
HK$16,287 HKD
View
B
Retailer 11
-
HK$17,785 HKD
View
B
Retailer 12
-
HK$17,958 HKD
View
B
Retailer 13
-
HK$18,554 HKD
View
B
Retailer 14
-
HK$19,786 HKD
View
B
Retailer 15
-
HK$20,021 HKD
View
B
Retailer 16
-
HK$20,970 HKD
View
Retailer 17
-
HK$21,127 HKD
View
Price last confirmed 31 days ago
B
Retailer 18
-
HK$21,786 HKD
View
B
Retailer 19
-
HK$30,016 HKD
View
Most Expensive
C
NZ Jewellers
9ae6d256-84b7-426f-a4bd-e2661672ff5a · Nov 5
HK$35,923 HKD
$4,579 USD
View
19 more retailers have this diamond
Prices start from HK$13,737 HKDSave up to HK$22,186 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+
1.00ct Round
HK$13,737 HKD