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Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 7552179432

Certificate GIA 7552179432

Diamond specifications and retailer prices

From HK$27,987 HKD
As of November 7, 2026
Save HK$22,547 HKD (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$50,534 HKD at MOH London · As of November 7, 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 F 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 7552179432. Listed at 4 retailers as of November 7, 2026, with prices from HK$27,987 to HK$50,534, a HK$22,547 spread on the same certified stone. MOH London lists it at HK$50,534. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle49.35°
Pavilion angle35.73°
OriginNatural
Grading LabGIA
CertificateGIA 7552179432
Dimensions6.98 × 5.38 × 3.64 mm
L/W Ratio1.30
Girdle conditionThick
Key to symbols
Crystal, Cloud, Needle
Top View
6.98 mm5.38 mm1.21 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7552179432
Side View
Table 70.0%Crown 49.35°Girdle: Slightly ThickPavilion 35.73°Culet: NoneDepth 67.7%

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 7
Current: HK$50,534 HKD|Low: HK$27,541 HKD|High: HK$51,679 HKD|Avg: HK$34,128 HKD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 5HK$27,807 HKD
Retailer 2HK$27,987 HKD
Retailer 4HK$30,879 HKD
Retailer 3HK$32,705 HKD
MOH LondonHK$50,534 HKD

45 data points across 5 retailers

4 retailersHK$27,987 HKD to HK$50,534 HKD

B+
Cheapest Retailer
-
HK$27,987 HKD
Retailer 2
-
HK$30,879 HKD
View
Price last confirmed 34 days ago
Retailer 3
-
HK$32,705 HKD
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
90A26EE00 · Nov 7
HK$50,534 HKD
£5,077 GBP
View
3 more retailers have this diamond
Prices start from HK$27,987 HKDSave up to HK$22,547 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$27,987 HKD