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Radiant|Natural|GIA

1.21ct K SI1 Radiant Natural Diamond

VG • K/SI1 • GIA 6375192673

Certificate GIA 6375192673

Diamond specifications and retailer prices

From HK$19,405 HKD
As of November 4, 2026
Save HK$22,797 HKD (54%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$42,203 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6375192673. Listed at 10 retailers as of November 4, 2026, with prices from HK$19,405 to HK$42,203, a HK$22,797 spread on the same certified stone. MOH London lists it at HK$42,203. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6375192673
Dimensions6.36 × 5.19 × 3.64 mm
L/W Ratio1.23
Top View
6.36 mm5.19 mm1.21 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6375192673
Side View
Table 65.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 70.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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$42,203 HKD|Low: HK$19,405 HKD|High: HK$42,820 HKD|Avg: HK$26,239 HKD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7HK$19,405 HKD
Retailer 6HK$20,142 HKD
Retailer 4HK$20,847 HKD
Retailer 5HK$24,751 HKD
Retailer 2HK$26,177 HKD
Retailer 3HK$29,461 HKD
MOH LondonHK$42,203 HKD

43 data points across 7 retailers

10 retailersHK$19,405 HKD to HK$42,203 HKD

B
Cheapest Retailer
-
HK$19,405 HKD
B
Retailer 2
-
HK$20,142 HKD
View
B
Retailer 3
-
HK$20,275 HKD
View
B
Retailer 4
-
HK$20,753 HKD
View
Retailer 5
-
HK$20,847 HKD
View
Price last confirmed 10 days ago
B
Retailer 6
-
HK$24,751 HKD
View
B
Retailer 7
-
HK$26,177 HKD
View
Retailer 8
-
HK$29,351 HKD
View
Price last confirmed 15 days ago
B
Retailer 9
-
HK$29,461 HKD
View
Most Expensive
B
MOH London
A7140E27C · Nov 4
HK$42,203 HKD
£4,240 GBP
View
9 more retailers have this diamond
Prices start from HK$19,405 HKDSave up to HK$22,797 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$19,405 HKD