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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552175864

Certificate GIA 6552175864

Diamond specifications and retailer prices

From HK$14,052 HKD
As of November 6, 2026
Save HK$25,378 HKD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$39,430 HKD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct 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 6552175864. Listed at 18 retailers as of November 2, 2026, with prices from HK$14,052 to HK$39,430, a HK$25,378 spread on the same certified stone. NZ Jewellers lists it at HK$39,430. 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

1.21
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552175864
Dimensions6.79 × 6.83 × 4.25 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.79 mm6.83 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6552175864
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.3%

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$39,430 HKD|Low: HK$14,052 HKD|High: HK$39,430 HKD|Avg: HK$21,270 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
Retailer 14
November 6, 2026
Retailer 7HK$14,052 HKD
Retailer 13HK$17,125 HKD
Retailer 12HK$17,164 HKD
Retailer 6HK$17,399 HKD
Retailer 11HK$17,854 HKD
Retailer 3HK$18,857 HKD
Retailer 4HK$18,857 HKD
Retailer 2HK$19,727 HKD
Retailer 9HK$19,829 HKD
Retailer 5HK$21,757 HKD
Retailer 8HK$21,968 HKD
Retailer 14HK$23,175 HKD
Retailer 10HK$32,948 HKD
NZ JewellersHK$39,430 HKD

28 data points across 14 retailers

18 retailersHK$14,052 HKD to HK$39,430 HKD

A
Cheapest Retailer
-
HK$14,052 HKD
B+
Retailer 2
-
HK$17,039 HKD
View
B+
Retailer 3
-
HK$17,125 HKD
View
B+
Retailer 4
-
HK$17,164 HKD
View
B+
Retailer 5
-
HK$17,399 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$17,783 HKD
View
B+
Retailer 7
-
HK$17,854 HKD
View
B+
Retailer 8
-
HK$18,771 HKD
View
B+
Retailer 9
-
HK$18,857 HKD
View
Retailer 10
-
HK$18,857 HKD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
HK$19,727 HKD
View
B+
Retailer 12
-
HK$19,829 HKD
View
B
Retailer 13
-
HK$21,757 HKD
View
B+
Retailer 14
-
HK$21,968 HKD
View
B
Retailer 15
-
HK$23,175 HKD
View
Retailer 16
-
HK$23,214 HKD
View
Price last confirmed 31 days ago
B
Retailer 17
-
HK$32,948 HKD
View
Most Expensive
B
NZ Jewellers
d4b92014-6fab-4719-bdf5-d39cdee6a9a9 · Nov 2
HK$39,430 HKD
$5,031 USD
View
17 more retailers have this diamond
Prices start from HK$14,052 HKDSave up to HK$25,378 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
1.21ct Round
HK$14,052 HKD