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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 $4,158 CAD
As of November 4, 2026
Save $4,001 CAD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,159 CAD 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 $4,158 to $8,159, a $4,001 spread on the same certified stone. NZ Jewellers lists it at $8,159. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,373 CAD|Low: $4,322 CAD|High: $7,734 CAD|Avg: $5,334 CAD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$4,322 CAD
Retailer 1$4,373 CAD
Retailer 7$4,863 CAD
Retailer 2$4,903 CAD
Retailer 3$5,438 CAD
Retailer 4$5,715 CAD
Retailer 5$7,623 CAD

41 data points across 7 retailers

14 retailers$4,158 CAD to $8,159 CAD

A
Cheapest Retailer
-
$4,158 CAD
A
Retailer 2
-
$4,322 CAD
View
Final sale: no returns
A
Retailer 3
-
$4,373 CAD
View
A
Retailer 4
-
$4,525 CAD
View
Retailer 5
-
$4,683 CAD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$4,683 CAD
View
A
Retailer 7
-
$4,863 CAD
View
B+
Retailer 8
-
$4,884 CAD
View
A
Retailer 9
-
$4,903 CAD
View
B+
Retailer 10
-
$5,403 CAD
View
B+
Retailer 11
-
$5,438 CAD
View
B+
Retailer 12
-
$5,715 CAD
View
B
Retailer 13
-
$7,623 CAD
View
Most Expensive
B
NZ Jewellers
3fecf4c4-363d-416e-babe-884dd73e005d · Nov 5
$8,159 CAD
$5,842 USD
View
13 more retailers have this diamond
Prices start from $4,158 CADSave up to $4,001 CAD

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
$4,158 CAD