Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 3515861632

Certificate GIA 3515861632

Diamond specifications and retailer prices

From HK$33,325 HKD
As of November 5, 2026
Save HK$7,688 HKD (19%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$63,428 HKD at NZ Jewellers · As of October 17, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3515861632. Listed at 20 retailers as of November 5, 2026, with a relatively tight 23% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3515861632
Dimensions6.95 × 6.92 × 4.16 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.95 mm6.92 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3515861632
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: HK$41,013 HKD|Low: HK$29,022 HKD|High: HK$58,679 HKD|Avg: HK$37,369 HKD
Retailer 1
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
November 6, 2026
Retailer 15HK$29,022 HKD
Retailer 2HK$29,469 HKD
Retailer 13HK$29,508 HKD
Retailer 10HK$31,350 HKD
Retailer 7HK$32,839 HKD
Retailer 3HK$33,325 HKD
Retailer 4HK$34,602 HKD
Retailer 11HK$35,229 HKD
Retailer 9HK$35,966 HKD
Retailer 6HK$36,695 HKD
Retailer 5HK$38,450 HKD
Retailer 8HK$39,101 HKD
Retailer 1HK$41,013 HKD
Retailer 14HK$44,328 HKD
Retailer 12HK$58,295 HKD

36 data points across 15 retailers

20 retailersHK$33,325 HKD to HK$41,013 HKD

Retailer 1
-
HK$29,022 HKD
Price last confirmed 8 days ago
Retailer 2
-
HK$29,469 HKD
View
Price last confirmed 9 days ago
Retailer 3
-
HK$29,508 HKD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$31,350 HKD
View
Price last confirmed 9 days ago
Retailer 5
-
HK$32,839 HKD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
HK$33,325 HKD
View
B
Retailer 7
-
HK$34,602 HKD
View
Retailer 8
-
HK$35,229 HKD
View
Price last confirmed 9 days ago
Retailer 9
-
HK$35,966 HKD
View
Price last confirmed 8 days ago
Retailer 10
-
HK$36,405 HKD
View
Price last confirmed 20 days ago
Retailer 11
-
HK$36,405 HKD
View
Price last confirmed 22 days ago
Retailer 12
-
HK$36,405 HKD
View
Price last confirmed 23 days ago
Retailer 13
-
HK$36,695 HKD
View
Price last confirmed 29 days ago
B
Retailer 14
-
HK$38,450 HKD
View
B
Retailer 15
-
HK$39,101 HKD
View
Retailer 16
-
HK$41,013 HKD
View
Retailer 17
-
HK$42,008 HKD
View
Price last confirmed 20 days ago
Retailer 18
-
HK$44,328 HKD
View
Price last confirmed 11 days ago
Retailer 19
-
HK$58,295 HKD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
cc76e0f9-6f19-4815-a1d1-7f9994dc5d3b · Oct 17
HK$63,428 HKD
$8,093 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from HK$33,325 HKDSave up to HK$7,688 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$33,325 HKD