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1.29ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 826667616

Shape and cutting style on the report: Round brilliant

Certificate IGI 826667616

Diamond specifications and retailer prices

From HK$18,340 HKD
As of November 6, 2026
Save HK$24,468 HKD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$42,808 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 826667616. Listed at 15 retailers as of November 5, 2026, with prices from HK$18,340 to HK$42,808, a HK$24,468 spread on the same certified stone. NZ Jewellers lists it at HK$42,808. 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 angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 826667616
Dimensions6.85 × 6.90 × 4.31 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.85 mm6.90 mm1.29 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 826667616
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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$42,808 HKD|Low: HK$17,681 HKD|High: HK$43,701 HKD|Avg: HK$24,279 HKD|-2.0%
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 7, 2026
Retailer 4HK$18,340 HKD
Retailer 5HK$18,896 HKD
Retailer 6HK$19,594 HKD
Retailer 12HK$20,220 HKD
Retailer 3HK$20,479 HKD
Retailer 13HK$20,479 HKD
Retailer 7HK$20,565 HKD
Retailer 14HK$21,263 HKD
Retailer 2HK$21,921 HKD
Retailer 15HK$23,630 HKD
Retailer 8HK$23,982 HKD
Retailer 10HK$24,993 HKD
Retailer 9HK$25,370 HKD
Retailer 11HK$35,778 HKD
NZ JewellersHK$42,808 HKD

37 data points across 15 retailers

15 retailersHK$18,340 HKD to HK$42,808 HKD

A
Cheapest Retailer
-
HK$18,340 HKD
A
Retailer 2
-
HK$18,896 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$19,594 HKD
View
A
Retailer 4
-
HK$20,220 HKD
View
Retailer 5
-
HK$20,479 HKD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$20,479 HKD
View
A
Retailer 7
-
HK$20,565 HKD
View
A
Retailer 8
-
HK$21,263 HKD
View
A
Retailer 9
-
HK$21,921 HKD
View
A
Retailer 10
-
HK$23,630 HKD
View
A
Retailer 11
-
HK$23,982 HKD
View
A
Retailer 12
-
HK$24,993 HKD
View
A
Retailer 13
-
HK$25,370 HKD
View
B+
Retailer 14
-
HK$35,778 HKD
View
Most Expensive
B
NZ Jewellers
0b5aed81-2d88-431e-9682-5718c1024ac9 · Nov 5
HK$42,808 HKD
$5,462 USD
View
14 more retailers have this diamond
Prices start from HK$18,340 HKDSave up to HK$24,468 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$18,340 HKD