Round|Natural|GIA

1.30ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6525175468

Certificate GIA 6525175468

Diamond specifications and retailer prices

From $3,738 AUD
As of November 4, 2026
Save $920 AUD (20%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,260 AUD at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6525175468. Listed at 15 retailers as of November 4, 2026, with a relatively tight 25% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6525175468
Dimensions6.98 × 6.94 × 4.29 mm
L/W Ratio1.01
Star length50%
Top View
6.98 mm6.94 mm1.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6525175468
Side View
Table 59.0%Crown 36°Girdle: Sli. ThickPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: $8,260 AUD|Low: $3,233 AUD|High: $8,260 AUD|Avg: $4,450 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 8$3,233 AUD
Retailer 10$3,366 AUD
Retailer 6$3,453 AUD
Retailer 5$3,580 AUD
Retailer 7$3,580 AUD
Retailer 13$3,738 AUD
Retailer 3$3,744 AUD
Retailer 11$3,893 AUD
Retailer 16$3,900 AUD
Retailer 9$4,117 AUD
Retailer 4$4,130 AUD
Retailer 14$4,154 AUD
Retailer 2$4,658 AUD
Retailer 15$5,748 AUD
Retailer 12$6,958 AUD
NZ Jewellers$8,260 AUD

35 data points across 16 retailers

15 retailers$3,738 AUD to $4,658 AUD

Retailer 1
-
$3,233 AUD
Price last confirmed 22 days ago
Retailer 2
-
$3,366 AUD
View
Price last confirmed 16 days ago
Retailer 3
-
$3,453 AUD
View
Price last confirmed 19 days ago
Retailer 4
-
$3,580 AUD
View
Price last confirmed 17 days ago
Retailer 5
-
$3,580 AUD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$3,738 AUD
View
Retailer 7
-
$3,744 AUD
View
Price last confirmed 22 days ago
Retailer 8
-
$3,893 AUD
View
Price last confirmed 17 days ago
Retailer 9
-
$4,117 AUD
View
Price last confirmed 15 days ago
Retailer 10
-
$4,130 AUD
View
Price last confirmed 16 days ago
B+
Retailer 11
-
$4,154 AUD
View
B+
Retailer 12
-
$4,658 AUD
View
Retailer 13
-
$5,748 AUD
View
Price last confirmed 16 days ago
Retailer 14
-
$6,958 AUD
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
07ddd77a-8d3c-4d4d-b91e-29cbd8c0c87d · Oct 20
$8,260 AUD
$5,782 USD
View
Price last confirmed 16 days ago
14 more retailers have this diamond
Prices start from $3,738 AUDSave up to $920 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.

B+
1.30ct Round
$3,738 AUD