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1.29ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 629464478

Shape and cutting style on the report: Round brilliant

Certificate IGI 629464478

Diamond specifications and retailer prices

From HK$23,332 HKD
As of November 4, 2026
Save HK$22,454 HKD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$45,786 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 629464478. Listed at 14 retailers as of November 4, 2026, with prices from HK$23,332 to HK$45,786, a HK$22,454 spread on the same certified stone. NZ Jewellers lists it at HK$45,786. 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

1.29
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 629464478
Dimensions6.94 × 6.99 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.94 mm6.99 mm1.29 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 629464478
Side View
Table 55.0%Crown 33.7°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.5%

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$24,539 HKD|Low: HK$24,257 HKD|High: HK$43,404 HKD|Avg: HK$29,931 HKD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6HK$24,257 HKD
Retailer 1HK$24,539 HKD
Retailer 7HK$27,290 HKD
Retailer 2HK$27,517 HKD
Retailer 3HK$30,519 HKD
Retailer 4HK$32,071 HKD
Retailer 5HK$42,777 HKD

41 data points across 7 retailers

14 retailersHK$23,332 HKD to HK$45,786 HKD

A
Cheapest Retailer
-
HK$23,332 HKD
A
Retailer 2
-
HK$24,257 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$24,539 HKD
View
A
Retailer 4
-
HK$25,393 HKD
View
Retailer 5
-
HK$26,279 HKD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$26,279 HKD
View
A
Retailer 7
-
HK$27,290 HKD
View
B+
Retailer 8
-
HK$27,407 HKD
View
A
Retailer 9
-
HK$27,517 HKD
View
B+
Retailer 10
-
HK$30,323 HKD
View
B+
Retailer 11
-
HK$30,519 HKD
View
B+
Retailer 12
-
HK$32,071 HKD
View
B
Retailer 13
-
HK$42,777 HKD
View
Most Expensive
B
NZ Jewellers
3fecf4c4-363d-416e-babe-884dd73e005d · Nov 5
HK$45,786 HKD
$5,842 USD
View
13 more retailers have this diamond
Prices start from HK$23,332 HKDSave up to HK$22,454 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
1.29ct Round
HK$23,332 HKD