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Round|Natural|IGI

1.21ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 573303518

Shape and cutting style on the report: Round brilliant

Certificate IGI 573303518

Diamond specifications and retailer prices

From HK$17,383 HKD
As of November 6, 2026
Save HK$16,247 HKD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$38,772 HKD at NZ Jewellers · As of September 26, 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 573303518. Listed at 18 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 angle35.6°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 573303518
Dimensions6.83 × 6.81 × 4.22 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.83 mm6.81 mm1.21 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 573303518
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 41°Culet: NoneDepth 61.9%

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$17,908 HKD|Low: HK$17,383 HKD|High: HK$35,676 HKD|Avg: HK$21,091 HKD|-6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3HK$17,383 HKD
Retailer 12HK$17,399 HKD
Retailer 10HK$17,517 HKD
Retailer 4HK$17,767 HKD
Retailer 1HK$17,908 HKD
Retailer 11HK$18,112 HKD
Retailer 2HK$20,346 HKD
Retailer 5HK$20,605 HKD
Retailer 6HK$22,047 HKD
Retailer 7HK$23,489 HKD
Retailer 9HK$23,951 HKD
Retailer 8HK$33,630 HKD

24 data points across 12 retailers

18 retailersHK$17,383 HKD to HK$33,630 HKD

A
Cheapest Retailer
-
HK$17,383 HKD
A
Retailer 2
-
HK$17,399 HKD
View
A
Retailer 3
-
HK$17,517 HKD
View
A
Retailer 4
-
HK$17,767 HKD
View
Final sale: no returns
A
Retailer 5
-
HK$17,908 HKD
View
A
Retailer 6
-
HK$18,112 HKD
View
Retailer 7
-
HK$18,543 HKD
View
Price last confirmed 43 days ago
B+
Retailer 8
-
HK$20,346 HKD
View
A
Retailer 9
-
HK$20,605 HKD
View
Retailer 10
-
HK$20,761 HKD
View
Price last confirmed 36 days ago
Retailer 11
-
HK$21,561 HKD
View
Price last confirmed 38 days ago
Retailer 12
-
HK$21,616 HKD
View
Price last confirmed 45 days ago
B+
Retailer 13
-
HK$22,047 HKD
View
B+
Retailer 14
-
HK$23,489 HKD
View
B+
Retailer 15
-
HK$23,951 HKD
View
Retailer 16
-
HK$23,959 HKD
View
Price last confirmed 38 days ago
B
Retailer 17
-
HK$33,630 HKD
View
Most Expensive
NZ Jewellers
0f475f16-e417-4635-bb49-ad59d5e3332c · Sep 26
HK$38,772 HKD
$4,947 USD
View
Price last confirmed 40 days ago
17 more retailers have this diamond
Prices start from HK$17,383 HKDSave up to HK$16,247 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$17,383 HKD