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Radiant|Natural|GIA

1.21ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 2558167281

Certificate GIA 2558167281

Diamond specifications and retailer prices

From HK$13,394 HKD
As of November 7, 2026
Save HK$20,605 HKD (61%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$33,999 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558167281. Listed at 8 retailers as of November 3, 2026, with prices from HK$13,394 to HK$33,999, a HK$20,605 spread on the same certified stone. NZ Jewellers lists it at HK$33,999. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle54.67°
Pavilion angle36.44°
OriginNatural
Grading LabGIA
CertificateGIA 2558167281
Dimensions6.91 × 5.37 × 3.66 mm
L/W Ratio1.29
Top View
6.91 mm5.37 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2558167281
Side View
Table 71.0%Crown 54.67°Girdle: THK-VTKPavilion 36.44°Culet: NoneDepth 68.1%

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$33,999 HKD|Low: HK$12,908 HKD|High: HK$34,179 HKD|Avg: HK$18,285 HKD|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 4HK$13,394 HKD
Retailer 5HK$13,778 HKD
Retailer 6HK$13,943 HKD
Retailer 8HK$14,186 HKD
Retailer 3HK$14,578 HKD
Retailer 7HK$14,954 HKD
Retailer 2HK$24,280 HKD
NZ JewellersHK$33,999 HKD

42 data points across 8 retailers

8 retailersHK$13,394 HKD to HK$33,999 HKD

A
Cheapest Retailer
-
HK$13,394 HKD
A
Retailer 2
-
HK$13,778 HKD
View
A
Retailer 3
-
HK$13,943 HKD
View
Retailer 4
-
HK$14,186 HKD
View
Price last confirmed 35 days ago
A
Retailer 5
-
HK$14,578 HKD
View
A
Retailer 6
-
HK$14,954 HKD
View
B+
Retailer 7
-
HK$24,280 HKD
View
Most Expensive
B
NZ Jewellers
3c79699f-d26b-4fe2-bbdd-c507cc815fd3 · Nov 3
HK$33,999 HKD
$4,338 USD
View
7 more retailers have this diamond
Prices start from HK$13,394 HKDSave up to HK$20,605 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$13,394 HKD