CaratHunter
Plans
Round|Natural|IGI

1.21ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 642405173

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405173

Diamond specifications and retailer prices

From HK$16,459 HKD
As of November 4, 2026
Save HK$21,639 HKD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$38,560 HKD at NZ Jewellers · As of September 21, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 642405173. Listed at 18 retailers as of November 4, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 642405173
Dimensions6.80 × 6.86 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.80 mm6.86 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405173
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41°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 4
Current: HK$38,098 HKD|Low: HK$16,459 HKD|High: HK$39,485 HKD|Avg: HK$21,795 HKD|-3.5%
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 12HK$16,459 HKD
Retailer 2HK$16,952 HKD
Retailer 6HK$17,023 HKD
Retailer 5HK$17,086 HKD
Retailer 3HK$18,222 HKD
Retailer 4HK$18,222 HKD
Retailer 7HK$18,888 HKD
Retailer 14HK$19,061 HKD
Retailer 11HK$20,025 HKD
Retailer 8HK$20,902 HKD
Retailer 15HK$21,028 HKD
Retailer 9HK$22,235 HKD
Retailer 10HK$22,603 HKD
Retailer 13HK$31,836 HKD
NZ JewellersHK$38,098 HKD

24 data points across 15 retailers

18 retailersHK$16,459 HKD to HK$38,098 HKD

A
Cheapest Retailer
-
HK$16,459 HKD
A
Retailer 2
-
HK$16,952 HKD
View
A
Retailer 3
-
HK$17,086 HKD
View
Retailer 4
-
HK$17,963 HKD
View
Price last confirmed 102 days ago
A
Retailer 5
-
HK$18,222 HKD
View
A
Retailer 6
-
HK$18,222 HKD
View
Retailer 7
-
HK$18,441 HKD
View
Price last confirmed 15 days ago
Retailer 8
-
HK$18,888 HKD
View
Price last confirmed 21 days ago
A
Retailer 9
-
HK$19,061 HKD
View
A
Retailer 10
-
HK$20,025 HKD
View
B+
Retailer 11
-
HK$20,902 HKD
View
B+
Retailer 12
-
HK$21,028 HKD
View
Retailer 13
-
HK$21,796 HKD
View
Price last confirmed 16 days ago
B+
Retailer 14
-
HK$22,235 HKD
View
B+
Retailer 15
-
HK$22,603 HKD
View
B
Retailer 16
-
HK$31,836 HKD
View
B
Retailer 17
-
HK$38,098 HKD
View
Most Expensive
NZ Jewellers
d7fcadd0-0be9-40fd-a6c5-aa36aa4a8791 · Sep 21
HK$38,560 HKD
$4,920 USD
View
Price last confirmed 46 days ago
17 more retailers have this diamond
Prices start from HK$16,459 HKDSave up to HK$21,639 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$16,459 HKD