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1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6501035788

Shape and cutting style on the report: Round

Certificate GIA 6501035788

Diamond specifications and retailer prices

From HK$30,096 HKD
As of November 6, 2026
Save HK$35,668 HKD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$90,645 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6501035788. Listed at 16 retailers as of November 5, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6501035788
Dimensions6.85 × 6.84 × 4.21 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.85 mm6.84 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501035788
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 61.6%

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$36,820 HKD|Low: HK$26,302 HKD|High: HK$60,842 HKD|Avg: HK$39,332 HKD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5HK$30,331 HKD
Retailer 6HK$31,569 HKD
Retailer 9HK$32,447 HKD
Retailer 8HK$34,195 HKD
Retailer 1HK$36,820 HKD
Retailer 7HK$38,051 HKD
Retailer 2HK$42,392 HKD
Retailer 3HK$46,053 HKD
Retailer 4HK$59,956 HKD

45 data points across 9 retailers

16 retailersHK$30,096 HKD to HK$65,764 HKD

B+
Cheapest Retailer
-
HK$30,096 HKD
B+
Retailer 2
-
HK$30,331 HKD
View
B+
Retailer 3
-
HK$31,569 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$32,447 HKD
View
B+
Retailer 5
-
HK$34,195 HKD
View
Retailer 6
-
HK$34,195 HKD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
HK$34,195 HKD
View
B+
Retailer 8
-
HK$36,820 HKD
View
Retailer 9
-
HK$38,051 HKD
View
Price last confirmed 29 days ago
B
Retailer 10
-
HK$39,461 HKD
View
Retailer 11
-
HK$41,679 HKD
View
Price last confirmed 15 days ago
B
Retailer 12
-
HK$42,392 HKD
View
B
Retailer 13
-
HK$46,053 HKD
View
B
Retailer 14
-
HK$59,956 HKD
View
B
Retailer 15
-
HK$65,764 HKD
View
Most Expensive
Diamond Quarter
1.21SI1H65885B7EN · Nov 5
HK$90,645 HKD
£9,107 GBP
View
Price under review
15 more retailers have this diamond
Prices start from HK$30,096 HKDSave up to HK$35,668 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$30,096 HKD