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Round|Natural|IGI

1.21ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 670479205

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479205

Diamond specifications and retailer prices

From HK$16,459 HKD
As of November 5, 2026
Save HK$15,377 HKD (48%) vs most expensive(unlock to see where)
16 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 670479205. Listed at 16 retailers as of November 4, 2026, with a 93% 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 angle36.4°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 670479205
Dimensions6.75 × 6.71 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.75 mm6.71 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670479205
Side View
Table 57.0%Crown 36.4°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 63.1%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: HK$38,560 HKD|Low: HK$15,980 HKD|High: HK$39,485 HKD|Avg: HK$22,198 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
November 5, 2026
Retailer 11HK$16,459 HKD
Retailer 9HK$16,694 HKD
Retailer 10HK$16,819 HKD
Retailer 3HK$17,086 HKD
Retailer 4HK$18,441 HKD
Retailer 12HK$18,441 HKD
Retailer 7HK$20,025 HKD
Retailer 2HK$20,902 HKD
Retailer 5HK$22,235 HKD
Retailer 6HK$22,603 HKD
Retailer 8HK$31,836 HKD
NZ JewellersHK$38,560 HKD

36 data points across 12 retailers

16 retailersHK$16,459 HKD to HK$31,836 HKD

A
Cheapest Retailer
-
HK$16,459 HKD
A
Retailer 2
-
HK$16,694 HKD
View
A
Retailer 3
-
HK$16,819 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$17,086 HKD
View
Retailer 5
-
HK$17,963 HKD
View
Price last confirmed 102 days ago
Retailer 6
-
HK$18,441 HKD
View
Price last confirmed 44 days ago
Retailer 7
-
HK$18,441 HKD
View
Price last confirmed 12 days ago
Retailer 8
-
HK$18,441 HKD
View
Price last confirmed 11 days ago
A
Retailer 9
-
HK$20,025 HKD
View
B+
Retailer 10
-
HK$20,902 HKD
View
Retailer 11
-
HK$21,279 HKD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
HK$22,235 HKD
View
B+
Retailer 13
-
HK$22,603 HKD
View
B
Retailer 14
-
HK$31,836 HKD
View
Retailer 15
-
HK$38,560 HKD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
a1a93c35-1056-4c3f-84cc-3e49603e7c18 · Sep 21
HK$38,560 HKD
$4,920 USD
View
Price last confirmed 46 days ago
15 more retailers have this diamond
Prices start from HK$16,459 HKDSave up to HK$15,377 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