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Round|Natural|GIA

1.30ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2507458479

Certificate GIA 2507458479

Diamond specifications and retailer prices

From $4,651 AUD
As of November 6, 2026
Save $5,858 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,509 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2507458479. Listed at 18 retailers as of November 5, 2026, with prices from $4,651 to $10,509, a $5,858 spread on the same certified stone. NZ Jewellers lists it at $10,509. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2507458479
Dimensions6.96 × 6.92 × 4.33 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.96 mm6.92 mm1.30 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507458479
Side View
Table 56.0%Crown 36.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.6%

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: $10,509 AUD|Low: $4,371 AUD|High: $10,509 AUD|Avg: $6,268 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
November 6, 2026
Retailer 3$4,651 AUD
Retailer 12$4,714 AUD
Retailer 11$4,851 AUD
Retailer 4$5,044 AUD
Retailer 13$5,462 AUD
Retailer 5$5,465 AUD
Retailer 6$5,465 AUD
Retailer 2$5,621 AUD
Retailer 9$6,076 AUD
Retailer 7$6,245 AUD
Retailer 8$6,380 AUD
Retailer 14$6,826 AUD
Retailer 10$10,061 AUD
NZ Jewellers$10,509 AUD

43 data points across 14 retailers

18 retailers$4,651 AUD to $10,509 AUD

A
Cheapest Retailer
-
$4,651 AUD
A
Retailer 2
-
$4,714 AUD
View
A
Retailer 3
-
$4,851 AUD
View
A
Retailer 4
-
$5,011 AUD
View
A
Retailer 5
-
$5,044 AUD
View
Final sale: no returns
B+
Retailer 6
-
$5,462 AUD
View
Retailer 7
-
$5,465 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$5,465 AUD
View
B+
Retailer 9
-
$5,621 AUD
View
B+
Retailer 10
-
$6,076 AUD
View
B+
Retailer 11
-
$6,113 AUD
View
B+
Retailer 12
-
$6,113 AUD
View
B+
Retailer 13
-
$6,245 AUD
View
B+
Retailer 14
-
$6,316 AUD
View
B+
Retailer 15
-
$6,380 AUD
View
Retailer 16
-
$6,826 AUD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$10,061 AUD
View
Most Expensive
B
NZ Jewellers
58c1d35b-c7d0-4655-956d-9e93b4bf05cb · Nov 5
$10,509 AUD
$7,221 USD
View
17 more retailers have this diamond
Prices start from $4,651 AUDSave up to $5,858 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
$4,651 AUD