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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5503489142

Certificate GIA 5503489142

Diamond specifications and retailer prices

From HK$25,268 HKD
As of November 1, 2026
Save HK$35,600 HKD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$60,867 HKD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5503489142. Listed at 16 retailers as of November 1, 2026, with prices from HK$25,268 to HK$60,867, a HK$35,600 spread on the same certified stone. Diamond Quarter lists it at HK$60,867. 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5503489142
Dimensions6.81 × 6.78 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.81 mm6.78 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5503489142
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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 1
Current: HK$31,930 HKD|Low: HK$21,890 HKD|High: HK$54,729 HKD|Avg: HK$35,666 HKD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6HK$25,628 HKD
Retailer 7HK$26,271 HKD
Retailer 5HK$26,357 HKD
Retailer 1HK$31,930 HKD
Retailer 2HK$33,231 HKD
Retailer 3HK$34,508 HKD
Retailer 9HK$35,550 HKD
Retailer 10HK$37,377 HKD
Retailer 4HK$52,534 HKD
Retailer 8HK$54,729 HKD

33 data points across 10 retailers

16 retailersHK$25,268 HKD to HK$60,867 HKD

A
Cheapest Retailer
-
HK$25,268 HKD
A
Retailer 2
-
HK$25,628 HKD
View
B+
Retailer 3
-
HK$26,357 HKD
View
Retailer 4
-
HK$28,458 HKD
View
Price last confirmed 22 days ago
Retailer 5
-
HK$28,458 HKD
View
Price last confirmed 18 days ago
Retailer 6
-
HK$29,555 HKD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
HK$31,930 HKD
View
B+
Retailer 8
-
HK$32,212 HKD
View
B+
Retailer 9
-
HK$32,212 HKD
View
Retailer 10
-
HK$32,839 HKD
View
Price last confirmed 20 days ago
B+
Retailer 11
-
HK$33,231 HKD
View
B+
Retailer 12
-
HK$34,508 HKD
View
Retailer 13
-
HK$35,550 HKD
View
Price last confirmed 23 days ago
B
Retailer 14
-
HK$52,534 HKD
View
Retailer 15
-
HK$54,729 HKD
View
Price last confirmed 18 days ago
Most Expensive
B
Diamond Quarter
1.21SI2F55428241N · Nov 5
HK$60,867 HKD
£6,115 GBP
View
15 more retailers have this diamond
Prices start from HK$25,268 HKDSave up to HK$35,600 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$25,268 HKD