CaratHunter
Plans
Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2447434477

Certificate GIA 2447434477

Diamond specifications and retailer prices

From HK$15,448 HKD
As of November 6, 2026
Save HK$20,761 HKD (57%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$43,325 HKD at NZ Jewellers · As of October 17, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2447434477. Listed at 21 retailers as of November 4, 2026, with a 134% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2447434477
Dimensions6.80 × 6.76 × 4.25 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2447434477
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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 6
Current: HK$24,124 HKD|Low: HK$14,930 HKD|High: HK$36,734 HKD|Avg: HK$22,630 HKD|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2HK$15,448 HKD
Retailer 6HK$18,810 HKD
Retailer 7HK$19,123 HKD
Retailer 3HK$21,796 HKD
Retailer 8HK$23,214 HKD
Retailer 1HK$24,124 HKD
Retailer 4HK$25,291 HKD
Retailer 5HK$36,209 HKD

38 data points across 8 retailers

21 retailersHK$15,448 HKD to HK$36,209 HKD

A
Cheapest Retailer
-
HK$15,448 HKD
B+
Retailer 2
-
HK$18,175 HKD
View
B+
Retailer 3
-
HK$18,559 HKD
View
B+
Retailer 4
-
HK$18,810 HKD
View
B+
Retailer 5
-
HK$19,123 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$19,421 HKD
View
B+
Retailer 7
-
HK$20,456 HKD
View
Retailer 8
-
HK$20,722 HKD
View
Price last confirmed 45 days ago
Retailer 9
-
HK$20,722 HKD
View
Price last confirmed 20 days ago
Retailer 10
-
HK$20,722 HKD
View
Price last confirmed 22 days ago
Retailer 11
-
HK$21,522 HKD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
HK$21,796 HKD
View
B+
Retailer 13
-
HK$21,827 HKD
View
Retailer 14
-
HK$23,214 HKD
View
Price last confirmed 31 days ago
Retailer 15
-
HK$23,912 HKD
View
Price last confirmed 20 days ago
Retailer 16
-
HK$23,912 HKD
View
Price last confirmed 46 days ago
B+
Retailer 17
-
HK$24,124 HKD
View
B+
Retailer 18
-
HK$25,291 HKD
View
B
Retailer 19
-
HK$36,209 HKD
View
Retailer 20
-
HK$43,325 HKD
View
Price last confirmed 47 days ago
Most Expensive
NZ Jewellers
d05e15f4-8009-4628-b689-e15d2496a80f · Oct 17
HK$43,325 HKD
$5,528 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from HK$15,448 HKDSave up to HK$20,761 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$15,448 HKD