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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2231667421

Certificate GIA 2231667421

Diamond specifications and retailer prices

From HK$17,658 HKD
As of November 5, 2026
Save HK$31,420 HKD (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$49,078 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231667421. Listed at 15 retailers as of November 5, 2026, with prices from HK$17,658 to HK$49,078, a HK$31,420 spread on the same certified stone. NZ Jewellers lists it at HK$49,078. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2231667421
Dimensions6.83 × 6.86 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.83 mm6.86 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231667421
Side View
Table 55.0%Crown 35.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.1%

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 5
Current: HK$49,078 HKD|Low: HK$17,658 HKD|High: HK$49,078 HKD|Avg: HK$26,243 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 6HK$17,658 HKD
Retailer 7HK$20,620 HKD
Retailer 11HK$20,973 HKD
Retailer 4HK$23,261 HKD
Retailer 10HK$23,301 HKD
Retailer 12HK$23,301 HKD
Retailer 13HK$23,481 HKD
Retailer 5HK$24,531 HKD
Retailer 14HK$24,531 HKD
Retailer 2HK$24,946 HKD
Retailer 3HK$25,315 HKD
Retailer 8HK$25,840 HKD
Retailer 15HK$34,171 HKD
Retailer 9HK$39,156 HKD
NZ JewellersHK$49,078 HKD

25 data points across 15 retailers

15 retailersHK$17,658 HKD to HK$49,078 HKD

A
Cheapest Retailer
-
HK$17,658 HKD
A
Retailer 2
-
HK$20,620 HKD
View
A
Retailer 3
-
HK$20,973 HKD
View
B+
Retailer 4
-
HK$23,261 HKD
View
B+
Retailer 5
-
HK$23,301 HKD
View
B+
Retailer 6
-
HK$23,301 HKD
View
B+
Retailer 7
-
HK$23,481 HKD
View
B+
Retailer 8
-
HK$24,531 HKD
View
B+
Retailer 9
-
HK$24,531 HKD
View
B+
Retailer 10
-
HK$24,946 HKD
View
B+
Retailer 11
-
HK$25,315 HKD
View
B+
Retailer 12
-
HK$25,840 HKD
View
B
Retailer 13
-
HK$34,171 HKD
View
B
Retailer 14
-
HK$39,156 HKD
View
Most Expensive
B
NZ Jewellers
c8614bb8-53af-487f-bd0f-6c8b45bb686f · Nov 5
HK$49,078 HKD
$6,262 USD
View
14 more retailers have this diamond
Prices start from HK$17,658 HKDSave up to HK$31,420 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 Round
HK$17,658 HKD