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Round|Natural|IGI

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 $3,406 AUD
As of November 6, 2026
Save $4,544 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,949 AUD 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 $3,406 to $7,949, a $4,544 spread on the same certified stone. NZ Jewellers lists it at $7,949. 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: $7,949 AUD|Low: $3,283 AUD|High: $8,115 AUD|Avg: $4,511 AUD|-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 6, 2026
Retailer 4$3,406 AUD
Retailer 5$3,509 AUD
Retailer 6$3,639 AUD
Retailer 12$3,755 AUD
Retailer 3$3,803 AUD
Retailer 13$3,803 AUD
Retailer 7$3,819 AUD
Retailer 14$3,949 AUD
Retailer 2$4,071 AUD
Retailer 15$4,388 AUD
Retailer 8$4,454 AUD
Retailer 10$4,641 AUD
Retailer 9$4,711 AUD
Retailer 11$6,644 AUD
NZ Jewellers$7,949 AUD

36 data points across 15 retailers

15 retailers$3,406 AUD to $7,949 AUD

A
Cheapest Retailer
-
$3,406 AUD
A
Retailer 2
-
$3,509 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,639 AUD
View
A
Retailer 4
-
$3,755 AUD
View
Retailer 5
-
$3,803 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$3,803 AUD
View
A
Retailer 7
-
$3,819 AUD
View
A
Retailer 8
-
$3,949 AUD
View
A
Retailer 9
-
$4,071 AUD
View
A
Retailer 10
-
$4,388 AUD
View
A
Retailer 11
-
$4,454 AUD
View
A
Retailer 12
-
$4,641 AUD
View
A
Retailer 13
-
$4,711 AUD
View
B+
Retailer 14
-
$6,644 AUD
View
Most Expensive
B
NZ Jewellers
0b5aed81-2d88-431e-9682-5718c1024ac9 · Nov 5
$7,949 AUD
$5,462 USD
View
14 more retailers have this diamond
Prices start from $3,406 AUDSave up to $4,544 AUD

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
$3,406 AUD