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Round|Natural|GIA

1.30ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2566059521

Certificate GIA 2566059521

Diamond specifications and retailer prices

From $4,627 AUD
As of November 5, 2026
Save $5,948 AUD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $10,575 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566059521. Listed at 24 retailers as of November 5, 2026, with prices from $4,627 to $10,575, a $5,948 spread on the same certified stone. NZ Jewellers lists it at $10,575. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566059521
Dimensions6.92 × 6.94 × 4.34 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
6.92 mm6.94 mm1.30 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566059521
Side View
Table 59.0%Crown 34°Girdle: STK-STKPavilion 41.4°Culet: NoneDepth 62.5%

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 5
Current: $10,575 AUD|Low: $4,602 AUD|High: $10,575 AUD|Avg: $6,679 AUD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
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Retailer 19
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Retailer 24
November 6, 2026
Retailer 23$4,627 AUD
Retailer 6$4,675 AUD
Retailer 19$4,879 AUD
Retailer 5$5,152 AUD
Retailer 16$5,340 AUD
Retailer 10$5,557 AUD
Retailer 7$5,771 AUD
Retailer 20$5,809 AUD
Retailer 15$5,902 AUD
Retailer 9$6,069 AUD
Retailer 11$6,069 AUD
Retailer 3$6,113 AUD
Retailer 8$6,284 AUD
Retailer 2$6,362 AUD
Retailer 12$6,429 AUD
Retailer 24$6,616 AUD
Retailer 22$6,912 AUD
Retailer 14$7,003 AUD
Retailer 17$7,347 AUD
Retailer 21$7,408 AUD
Retailer 13$9,223 AUD
Retailer 18$9,482 AUD
Retailer 4$10,122 AUD
NZ Jewellers$10,575 AUD

20 data points across 24 retailers

24 retailers$4,627 AUD to $10,575 AUD

A
Cheapest Retailer
-
$4,627 AUD
A
Retailer 2
-
$4,675 AUD
View
A
Retailer 3
-
$4,879 AUD
View
A
Retailer 4
-
$5,152 AUD
View
A
Retailer 5
-
$5,340 AUD
View
A
Retailer 6
-
$5,557 AUD
View
B+
Retailer 7
-
$5,771 AUD
View
B+
Retailer 8
-
$5,809 AUD
View
B+
Retailer 9
-
$5,902 AUD
View
B+
Retailer 10
-
$6,069 AUD
View
Retailer 11
-
$6,069 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$6,113 AUD
View
B+
Retailer 13
-
$6,284 AUD
View
B+
Retailer 14
-
$6,362 AUD
View
B+
Retailer 15
-
$6,429 AUD
View
B+
Retailer 16
-
$6,616 AUD
View
Retailer 17
-
$6,888 AUD
View
Price last confirmed 29 days ago
B+
Retailer 18
-
$6,912 AUD
View
B
Retailer 19
-
$7,003 AUD
View
B+
Retailer 20
-
$7,408 AUD
View
B
Retailer 21
-
$9,223 AUD
View
B
Retailer 22
-
$9,482 AUD
View
B
Retailer 23
-
$10,122 AUD
View
Most Expensive
B
NZ Jewellers
e1485e1c-57db-4148-8f5a-2c5d60bd4497 · Nov 5
$10,575 AUD
$7,266 USD
View
23 more retailers have this diamond
Prices start from $4,627 AUDSave up to $5,948 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
$4,627 AUD