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Round|Natural|IGI

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 651482131

Shape and cutting style on the report: Round brilliant

Certificate IGI 651482131

Diamond specifications and retailer prices

From $1,958 AUD
As of November 5, 2026
Save $4,126 AUD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,084 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 651482131. Listed at 19 retailers as of November 5, 2026, with prices from $1,958 to $6,084, a $4,126 spread on the same certified stone. NZ Jewellers lists it at $6,084. 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

1.30
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 651482131
Dimensions6.95 × 6.91 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.95 mm6.91 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 651482131
Side View
Table 59.0%Crown 33.8°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.9%

Caratlytics Score

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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 5
Current: $1,958 AUD|Low: $1,958 AUD|High: $4,423 AUD|Avg: $3,036 AUD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 1$1,958 AUD
Retailer 7$2,164 AUD
Retailer 2$2,360 AUD
Retailer 8$2,643 AUD
Retailer 4$2,798 AUD
Retailer 3$3,044 AUD
Retailer 6$3,313 AUD
Retailer 5$4,357 AUD

32 data points across 8 retailers

19 retailers$1,958 AUD to $6,084 AUD

A
Cheapest Retailer
-
$1,958 AUD
A
Retailer 2
-
$2,164 AUD
View
A
Retailer 3
-
$2,273 AUD
View
A
Retailer 4
-
$2,360 AUD
View
A
Retailer 5
-
$2,494 AUD
View
Retailer 6
-
$2,494 AUD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$2,586 AUD
View
A
Retailer 8
-
$2,610 AUD
View
A
Retailer 9
-
$2,643 AUD
View
A
Retailer 10
-
$2,690 AUD
View
B+
Retailer 11
-
$2,751 AUD
View
A
Retailer 12
-
$2,798 AUD
View
B+
Retailer 13
-
$2,878 AUD
View
A
Retailer 14
-
$3,044 AUD
View
A
Retailer 15
-
$3,313 AUD
View
B+
Retailer 16
-
$3,758 AUD
View
B+
Retailer 17
-
$4,128 AUD
View
B+
Retailer 18
-
$4,357 AUD
View
Most Expensive
B
NZ Jewellers
e921917e-3950-4f9e-82a3-5d889092efa1 · Nov 5
$6,084 AUD
$4,259 USD
View
18 more retailers have this diamond
Prices start from $1,958 AUDSave up to $4,126 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
1.30ct Round
$1,958 AUD