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Round|Natural|IGI

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 803680527

Shape and cutting style on the report: Round brilliant

Certificate IGI 803680527

Diamond specifications and retailer prices

From $2,350 AUD
As of November 1, 2026
Save $4,176 AUD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,525 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 803680527. Listed at 16 retailers as of November 1, 2026, with prices from $2,350 to $6,525, a $4,176 spread on the same certified stone. NZ Jewellers lists it at $6,525. 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 angle34.1°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 803680527
Dimensions6.88 × 6.94 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.88 mm6.94 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803680527
Side View
Table 58.0%Crown 34.1°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.9%

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 1
Current: $6,525 AUD|Low: $2,350 AUD|High: $6,525 AUD|Avg: $3,213 AUD
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
Retailer 16
November 6, 2026
Retailer 6$2,350 AUD
Retailer 7$2,437 AUD
Retailer 2$2,560 AUD
Retailer 8$2,607 AUD
Retailer 14$2,676 AUD
Retailer 16$2,676 AUD
Retailer 4$2,750 AUD
Retailer 15$2,798 AUD
Retailer 5$2,871 AUD
Retailer 9$2,920 AUD
Retailer 3$3,087 AUD
Retailer 10$3,101 AUD
Retailer 11$3,264 AUD
Retailer 12$3,630 AUD
Retailer 13$4,674 AUD
NZ Jewellers$6,525 AUD

21 data points across 16 retailers

16 retailers$2,350 AUD to $6,525 AUD

A
Cheapest Retailer
-
$2,350 AUD
A
Retailer 2
-
$2,437 AUD
View
A
Retailer 3
-
$2,560 AUD
View
A
Retailer 4
-
$2,607 AUD
View
Retailer 5
-
$2,676 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,676 AUD
View
A
Retailer 7
-
$2,750 AUD
View
A
Retailer 8
-
$2,798 AUD
View
A
Retailer 9
-
$2,871 AUD
View
A
Retailer 10
-
$2,920 AUD
View
A
Retailer 11
-
$3,087 AUD
View
A
Retailer 12
-
$3,101 AUD
View
A
Retailer 13
-
$3,264 AUD
View
B+
Retailer 14
-
$3,630 AUD
View
B+
Retailer 15
-
$4,674 AUD
View
Most Expensive
B
NZ Jewellers
3006bd38-023d-4a74-ae31-328dbbbb3290 · Nov 5
$6,525 AUD
$4,568 USD
View
15 more retailers have this diamond
Prices start from $2,350 AUDSave up to $4,176 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
$2,350 AUD