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Radiant|Natural|GIA

1.21ct F SI2 Radiant Natural Diamond

ID • F/SI2 • GIA 1538184161

Certificate GIA 1538184161

Diamond specifications and retailer prices

From HK$18,677 HKD
As of November 7, 2026
Save HK$20,785 HKD (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$39,461 HKD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1538184161. Listed at 6 retailers as of November 3, 2026, with prices from HK$18,677 to HK$39,461, a HK$20,785 spread on the same certified stone. NZ Jewellers lists it at HK$39,461. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle48.74°
Pavilion angle31.51°
OriginNatural
Grading LabGIA
CertificateGIA 1538184161
Dimensions6.70 × 5.29 × 3.63 mm
L/W Ratio1.27
Girdle conditionVery Thick
Key to symbols
Cloud, Crystal, Feather, Cavity, Needle, Indented Natural
Top View
6.70 mm5.29 mm1.21 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1538184161
Side View
Table 66.0%Crown 48.74°Girdle: THK-VTKPavilion 31.51°Culet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: HK$39,461 HKD|Low: HK$18,653 HKD|High: HK$39,759 HKD|Avg: HK$24,243 HKD|-0.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 2HK$18,677 HKD
Retailer 5HK$18,872 HKD
Retailer 4HK$19,742 HKD
Retailer 6HK$19,993 HKD
Retailer 9HK$20,871 HKD
Retailer 7HK$22,007 HKD
Retailer 8HK$23,481 HKD
Retailer 3HK$32,894 HKD
NZ JewellersHK$39,461 HKD

29 data points across 9 retailers

6 retailersHK$18,677 HKD to HK$39,461 HKD

A
Cheapest Retailer
-
HK$18,677 HKD
A
Retailer 2
-
HK$18,872 HKD
View
A
Retailer 3
-
HK$19,742 HKD
View
A
Retailer 4
-
HK$19,993 HKD
View
B+
Retailer 5
-
HK$32,894 HKD
View
Most Expensive
B
NZ Jewellers
cc3a81c0-08de-4887-bf65-230260d48f34 · Nov 3
HK$39,461 HKD
$5,035 USD
View
5 more retailers have this diamond
Prices start from HK$18,677 HKDSave up to HK$20,785 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.

A
1.21ct Radiant
HK$18,677 HKD