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1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2506134651

Shape and cutting style on the report: Round brilliant

Certificate GIA 2506134651

Diamond specifications and retailer prices

From HK$14,382 HKD
As of November 6, 2026
Save HK$27,274 HKD (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$41,656 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 top-tier cut grade and certified by GIA 2506134651. Listed at 21 retailers as of November 5, 2026, with prices from HK$14,382 to HK$41,656, a HK$27,274 spread on the same certified stone. NZ Jewellers lists it at HK$41,656. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506134651
Dimensions6.39 × 6.35 × 3.99 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.39 mm6.35 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2506134651
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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$14,382 HKD|Low: HK$14,382 HKD|High: HK$35,323 HKD|Avg: HK$21,303 HKD|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1HK$14,382 HKD
Retailer 7HK$14,640 HKD
Retailer 8HK$18,003 HKD
Retailer 9HK$18,387 HKD
Retailer 2HK$18,802 HKD
Retailer 3HK$20,957 HKD
Retailer 6HK$22,525 HKD
Retailer 4HK$24,319 HKD
Retailer 5HK$34,814 HKD

29 data points across 9 retailers

21 retailersHK$14,382 HKD to HK$41,656 HKD

A
Cheapest Retailer
-
HK$14,382 HKD
B+
Retailer 2
-
HK$14,640 HKD
View
B+
Retailer 3
-
HK$17,438 HKD
View
B+
Retailer 4
-
HK$17,470 HKD
View
B+
Retailer 5
-
HK$18,003 HKD
View
Retailer 6
-
HK$18,159 HKD
View
Price last confirmed 82 days ago
B
Retailer 7
-
HK$18,387 HKD
View
Final sale: no returns
B+
Retailer 8
-
HK$18,802 HKD
View
B+
Retailer 9
-
HK$19,750 HKD
View
B+
Retailer 10
-
HK$19,923 HKD
View
B
Retailer 11
-
HK$20,299 HKD
View
B
Retailer 12
-
HK$20,847 HKD
View
B+
Retailer 13
-
HK$20,957 HKD
View
B
Retailer 14
-
HK$21,020 HKD
View
Retailer 15
-
HK$22,321 HKD
View
Price last confirmed 30 days ago
B
Retailer 16
-
HK$22,525 HKD
View
B
Retailer 17
-
HK$22,987 HKD
View
B
Retailer 18
-
HK$24,319 HKD
View
B
Retailer 19
-
HK$27,298 HKD
View
B
Retailer 20
-
HK$34,814 HKD
View
Most Expensive
B
NZ Jewellers
8b7bb6df-972d-41c2-b5d1-2a135753b617 · Nov 5
HK$41,656 HKD
$5,315 USD
View
20 more retailers have this diamond
Prices start from HK$14,382 HKDSave up to HK$27,274 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
1.00ct Round
HK$14,382 HKD