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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1493188319

Certificate GIA 1493188319

Diamond specifications and retailer prices

From HK$16,153 HKD
As of November 6, 2026
Save HK$25,119 HKD (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$41,272 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 1493188319. Listed at 19 retailers as of November 5, 2026, with prices from HK$16,153 to HK$41,272, a HK$25,119 spread on the same certified stone. NZ Jewellers lists it at HK$41,272. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1493188319
Dimensions6.39 × 6.36 × 3.99 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.39 mm6.36 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1493188319
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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$41,272 HKD|Low: HK$13,755 HKD|High: HK$41,272 HKD|Avg: HK$22,546 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10HK$16,506 HKD
Retailer 9HK$16,537 HKD
Retailer 3HK$17,885 HKD
Retailer 13HK$17,885 HKD
Retailer 5HK$17,908 HKD
Retailer 12HK$18,708 HKD
Retailer 4HK$20,636 HKD
Retailer 2HK$20,761 HKD
Retailer 11HK$22,109 HKD
Retailer 6HK$23,238 HKD
Retailer 7HK$24,092 HKD
Retailer 8HK$34,586 HKD
NZ JewellersHK$41,272 HKD

43 data points across 13 retailers

19 retailersHK$16,153 HKD to HK$41,272 HKD

B+
Cheapest Retailer
-
HK$16,153 HKD
B+
Retailer 2
-
HK$16,506 HKD
View
Final sale: no returns
B+
Retailer 3
-
HK$16,537 HKD
View
B+
Retailer 4
-
HK$17,250 HKD
View
B+
Retailer 5
-
HK$17,885 HKD
View
Retailer 6
-
HK$17,885 HKD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
HK$17,908 HKD
View
B+
Retailer 8
-
HK$18,277 HKD
View
B
Retailer 9
-
HK$18,708 HKD
View
B+
Retailer 10
-
HK$19,351 HKD
View
B
Retailer 11
-
HK$20,636 HKD
View
B
Retailer 12
-
HK$20,738 HKD
View
B+
Retailer 13
-
HK$20,761 HKD
View
B
Retailer 14
-
HK$20,902 HKD
View
Retailer 15
-
HK$22,109 HKD
View
Price last confirmed 30 days ago
B
Retailer 16
-
HK$23,238 HKD
View
B
Retailer 17
-
HK$24,092 HKD
View
B
Retailer 18
-
HK$34,586 HKD
View
Most Expensive
B
NZ Jewellers
e7966b03-233a-4eb6-86cc-9d4bdb3f2631 · Nov 5
HK$41,272 HKD
$5,266 USD
View
18 more retailers have this diamond
Prices start from HK$16,153 HKDSave up to HK$25,119 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$16,153 HKD