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Round|Natural|GIA

1.30ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1558372388

Certificate GIA 1558372388

Diamond specifications and retailer prices

From $2,724 AUD
As of November 4, 2026
Save $4,755 AUD (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,480 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558372388. Listed at 15 retailers as of November 4, 2026, with prices from $2,724 to $7,480, a $4,755 spread on the same certified stone. NZ Jewellers lists it at $7,480. 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
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1558372388
Dimensions6.92 × 6.95 × 4.32 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.92 mm6.95 mm1.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558372388
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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 4
Current: $7,480 AUD|Low: $2,651 AUD|High: $7,521 AUD|Avg: $3,704 AUD|-0.6%
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
November 6, 2026
Retailer 10$2,724 AUD
Retailer 11$2,828 AUD
Retailer 5$2,911 AUD
Retailer 14$2,928 AUD
Retailer 13$2,991 AUD
Retailer 15$2,997 AUD
Retailer 6$3,120 AUD
Retailer 7$3,188 AUD
Retailer 3$3,241 AUD
Retailer 9$3,391 AUD
Retailer 12$3,740 AUD
Retailer 2$3,763 AUD
Retailer 8$4,171 AUD
Retailer 4$6,164 AUD
NZ Jewellers$7,480 AUD

31 data points across 15 retailers

15 retailers$2,724 AUD to $7,480 AUD

A
Cheapest Retailer
-
$2,724 AUD
A
Retailer 2
-
$2,828 AUD
View
A
Retailer 3
-
$2,911 AUD
View
A
Retailer 4
-
$2,928 AUD
View
A
Retailer 5
-
$2,991 AUD
View
Final sale: no returns
A
Retailer 6
-
$2,997 AUD
View
A
Retailer 7
-
$3,120 AUD
View
Retailer 8
-
$3,188 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$3,241 AUD
View
A
Retailer 10
-
$3,391 AUD
View
B+
Retailer 11
-
$3,740 AUD
View
B+
Retailer 12
-
$3,763 AUD
View
B+
Retailer 13
-
$4,171 AUD
View
B
Retailer 14
-
$6,164 AUD
View
Most Expensive
B
NZ Jewellers
eb213151-6507-4408-8adc-17db97831ab7 · Nov 5
$7,480 AUD
$5,236 USD
View
14 more retailers have this diamond
Prices start from $2,724 AUDSave up to $4,755 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
$2,724 AUD