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Radiant|Natural|GIA

1.21ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6561517299

Certificate GIA 6561517299

Diamond specifications and retailer prices

From HK$32,431 HKD
As of November 6, 2026
Save HK$24,483 HKD (43%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$56,914 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561517299. Listed at 5 retailers as of November 4, 2026, with prices from HK$32,431 to HK$56,914, a HK$24,483 spread on the same certified stone. MOH London lists it at HK$56,914. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.89°
OriginNatural
Grading LabGIA
CertificateGIA 6561517299
Dimensions7.17 × 5.38 × 3.64 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.17 mm5.38 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561517299
Side View
Table 68.0%Crown 47.89°Girdle: Sli. Thick - ThickPavilionCulet: NoneDepth 67.7%

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$56,914 HKD|Low: HK$31,898 HKD|High: HK$59,482 HKD|Avg: HK$39,764 HKD|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 5HK$31,898 HKD
Retailer 4HK$32,431 HKD
Retailer 2HK$35,268 HKD
Retailer 3HK$40,308 HKD
MOH LondonHK$56,914 HKD

23 data points across 5 retailers

5 retailersHK$32,431 HKD to HK$56,914 HKD

Retailer 1
-
HK$31,898 HKD
Price last confirmed 13 days ago
B+
Retailer 2
-
HK$32,431 HKD
View
B+
Retailer 3
-
HK$35,268 HKD
View
B+
Retailer 4
-
HK$40,308 HKD
View
Most Expensive
B
MOH London
0DAA789FB · Nov 4
HK$56,914 HKD
£5,718 GBP
View
4 more retailers have this diamond
Prices start from HK$32,431 HKDSave up to HK$24,483 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 Radiant
HK$32,431 HKD