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1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 628465258

Shape and cutting style on the report: Round brilliant

Certificate IGI 628465258

Diamond specifications and retailer prices

From HK$11,396 HKD
As of November 6, 2026
Save HK$21,976 HKD (66%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$33,372 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 628465258. Listed at 14 retailers as of November 5, 2026, with prices from HK$11,396 to HK$33,372, a HK$21,976 spread on the same certified stone. NZ Jewellers lists it at HK$33,372. 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

1.23
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 628465258
Dimensions6.90 × 6.84 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.90 mm6.84 mm1.23 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 628465258
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.2%

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$11,396 HKD|Low: HK$11,396 HKD|High: HK$28,301 HKD|Avg: HK$16,987 HKD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1HK$11,396 HKD
Retailer 6HK$14,421 HKD
Retailer 7HK$14,585 HKD
Retailer 4HK$14,656 HKD
Retailer 8HK$14,726 HKD
Retailer 2HK$15,275 HKD
Retailer 3HK$19,437 HKD
Retailer 5HK$27,964 HKD

37 data points across 8 retailers

14 retailersHK$11,396 HKD to HK$33,372 HKD

A
Cheapest Retailer
-
HK$11,396 HKD
B+
Retailer 2
-
HK$14,421 HKD
View
A
Retailer 3
-
HK$14,585 HKD
View
A
Retailer 4
-
HK$14,656 HKD
View
B+
Retailer 5
-
HK$14,726 HKD
View
Final sale: no returns
A
Retailer 6
-
HK$15,275 HKD
View
Retailer 7
-
HK$15,965 HKD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
HK$15,965 HKD
View
B+
Retailer 9
-
HK$16,701 HKD
View
B+
Retailer 10
-
HK$17,046 HKD
View
B+
Retailer 11
-
HK$18,418 HKD
View
B+
Retailer 12
-
HK$19,437 HKD
View
B
Retailer 13
-
HK$27,964 HKD
View
Most Expensive
B
NZ Jewellers
5ba006be-63d5-4d9e-a568-7e83ac34c81e · Nov 5
HK$33,372 HKD
$4,258 USD
View
13 more retailers have this diamond
Prices start from HK$11,396 HKDSave up to HK$21,976 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
1.23ct Round
HK$11,396 HKD