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Round|Natural|GIA

1.29ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552135118

Certificate GIA 6552135118

Diamond specifications and retailer prices

From $5,072 AUD
As of November 3, 2026
Save $4,117 AUD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,575 AUD at NZ Jewellers · As of October 3, 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 GIA 6552135118. Listed at 14 retailers as of November 1, 2026, with a 81% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552135118
Dimensions7.05 × 7.01 × 4.22 mm
L/W Ratio1.01
Star length45%
Top View
7.05 mm7.01 mm1.29 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552135118
Side View
Table 59.0%Crown 33°GirdlePavilion 40.8°Culet: NoneDepth 60.0%

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 3
Current: $5,708 AUD|Low: $5,072 AUD|High: $9,561 AUD|Avg: $6,278 AUD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 3, 2026
Retailer 12$5,072 AUD
Retailer 13$5,261 AUD
Retailer 7$5,286 AUD
Retailer 3$5,496 AUD
Retailer 4$5,705 AUD
Retailer 1$5,708 AUD
Retailer 5$5,867 AUD
Retailer 2$5,891 AUD
Retailer 11$5,935 AUD
Retailer 10$6,330 AUD
Retailer 6$6,410 AUD
Retailer 9$6,755 AUD
Retailer 8$9,189 AUD

23 data points across 13 retailers

14 retailers$5,072 AUD to $9,189 AUD

A
Cheapest Retailer
-
$5,072 AUD
Final sale: no returns
A
Retailer 2
-
$5,261 AUD
View
A
Retailer 3
-
$5,286 AUD
View
Retailer 4
-
$5,496 AUD
View
Price last confirmed 30 days ago
Retailer 5
-
$5,705 AUD
View
Price last confirmed 29 days ago
B+
Retailer 6
-
$5,708 AUD
View
Retailer 7
-
$5,891 AUD
View
Price last confirmed 34 days ago
B+
Retailer 8
-
$5,935 AUD
View
B+
Retailer 9
-
$6,330 AUD
View
Retailer 10
-
$6,341 AUD
View
Price last confirmed 36 days ago
B+
Retailer 11
-
$6,410 AUD
View
B
Retailer 12
-
$6,755 AUD
View
B
Retailer 13
-
$9,189 AUD
View
Most Expensive
NZ Jewellers
0f788a29-1646-44e9-927e-51f021c4856d · Oct 3
$9,575 AUD
$6,579 USD
View
Price last confirmed 34 days ago
13 more retailers have this diamond
Prices start from $5,072 AUDSave up to $4,117 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
$5,072 AUD