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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505412227

Certificate GIA 6505412227

Diamond specifications and retailer prices

From HK$12,654 HKD
As of November 4, 2026
Save HK$21,825 HKD (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$34,480 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505412227. Listed at 16 retailers as of November 4, 2026, with prices from HK$12,654 to HK$34,480, a HK$21,825 spread on the same certified stone. NZ Jewellers lists it at HK$34,480. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle31.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505412227
Dimensions6.47 × 6.43 × 3.92 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.47 mm6.43 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6505412227
Side View
Table 59.0%Crown 31.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.8%

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 4
Current: HK$13,525 HKD|Low: HK$12,395 HKD|High: HK$25,065 HKD|Avg: HK$16,143 HKD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11HK$12,654 HKD
Retailer 3HK$12,882 HKD
Retailer 10HK$13,101 HKD
Retailer 1HK$13,525 HKD
Retailer 12HK$14,184 HKD
Retailer 2HK$14,592 HKD
Retailer 4HK$14,788 HKD
Retailer 8HK$15,596 HKD
Retailer 5HK$16,389 HKD
Retailer 7HK$17,252 HKD
Retailer 6HK$19,150 HKD
Retailer 9HK$24,697 HKD

37 data points across 12 retailers

16 retailersHK$12,654 HKD to HK$34,480 HKD

A
Cheapest Retailer
-
HK$12,654 HKD
A
Retailer 2
-
HK$12,882 HKD
View
A
Retailer 3
-
HK$13,101 HKD
View
A
Retailer 4
-
HK$13,525 HKD
View
Retailer 5
-
HK$14,137 HKD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
HK$14,137 HKD
View
B+
Retailer 7
-
HK$14,184 HKD
View
B+
Retailer 8
-
HK$14,592 HKD
View
B+
Retailer 9
-
HK$14,788 HKD
View
B+
Retailer 10
-
HK$15,596 HKD
View
B+
Retailer 11
-
HK$16,310 HKD
View
B+
Retailer 12
-
HK$16,389 HKD
View
B+
Retailer 13
-
HK$17,252 HKD
View
B
Retailer 14
-
HK$19,150 HKD
View
B
Retailer 15
-
HK$24,697 HKD
View
Most Expensive
B
NZ Jewellers
86dc830f-720d-427e-b48b-c56f5dd959f7 · Nov 5
HK$34,480 HKD
$4,395 USD
View
15 more retailers have this diamond
Prices start from HK$12,654 HKDSave up to HK$21,825 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$12,654 HKD