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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6495819176

Certificate GIA 6495819176

Diamond specifications and retailer prices

From HK$18,778 HKD
As of November 4, 2026
Save HK$23,763 HKD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$42,541 HKD at NZ Jewellers · As of November 5, 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 6495819176. Listed at 15 retailers as of November 4, 2026, with prices from HK$18,778 to HK$42,541, a HK$23,763 spread on the same certified stone. NZ Jewellers lists it at HK$42,541. 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
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6495819176
Dimensions6.79 × 6.77 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.79 mm6.77 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6495819176
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

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 4
Current: HK$42,541 HKD|Low: HK$16,427 HKD|High: HK$42,541 HKD|Avg: HK$24,634 HKD|+4.8%
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
Retailer 15
Retailer 16
November 7, 2026
Retailer 6HK$17,713 HKD
Retailer 4HK$18,778 HKD
Retailer 9HK$19,202 HKD
Retailer 14HK$19,594 HKD
Retailer 13HK$20,346 HKD
Retailer 16HK$20,346 HKD
Retailer 3HK$21,286 HKD
Retailer 2HK$21,404 HKD
Retailer 7HK$22,603 HKD
Retailer 5HK$22,940 HKD
Retailer 15HK$23,481 HKD
Retailer 11HK$24,837 HKD
Retailer 10HK$25,213 HKD
Retailer 8HK$35,253 HKD
Retailer 12HK$35,652 HKD
NZ JewellersHK$42,541 HKD

36 data points across 16 retailers

15 retailersHK$18,778 HKD to HK$42,541 HKD

B+
Cheapest Retailer
-
HK$18,778 HKD
Final sale: no returns
B+
Retailer 2
-
HK$19,202 HKD
View
B+
Retailer 3
-
HK$19,594 HKD
View
B+
Retailer 4
-
HK$20,346 HKD
View
Retailer 5
-
HK$20,346 HKD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
HK$21,286 HKD
View
B+
Retailer 7
-
HK$21,404 HKD
View
Retailer 8
-
HK$22,603 HKD
View
Price last confirmed 26 days ago
Retailer 9
-
HK$22,940 HKD
View
Price last confirmed 26 days ago
B+
Retailer 10
-
HK$23,481 HKD
View
B+
Retailer 11
-
HK$24,837 HKD
View
B
Retailer 12
-
HK$25,213 HKD
View
Retailer 13
-
HK$35,253 HKD
View
Price last confirmed 26 days ago
B
Retailer 14
-
HK$35,652 HKD
View
Most Expensive
B
NZ Jewellers
6f08d3b7-6352-41ba-bfd4-e59c6e82067d · Nov 5
HK$42,541 HKD
$5,428 USD
View
14 more retailers have this diamond
Prices start from HK$18,778 HKDSave up to HK$23,763 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+
1.21ct Round
HK$18,778 HKD