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Round|Natural|GIA

1.30ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2567153963

Certificate GIA 2567153963

Diamond specifications and retailer prices

From $2,203 AUD
As of November 5, 2026
Save $4,364 AUD (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,567 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 GIA 2567153963. Listed at 16 retailers as of November 5, 2026, with prices from $2,203 to $6,567, a $4,364 spread on the same certified stone. NZ Jewellers lists it at $6,567. 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
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2567153963
Dimensions6.91 × 6.97 × 4.39 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Indented Natural, Needle
Top View
6.91 mm6.97 mm1.30 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2567153963
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.3%

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: $2,818 AUD|Low: $2,203 AUD|High: $5,568 AUD|Avg: $3,645 AUD|-7.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$2,203 AUD
Retailer 1$2,818 AUD
Retailer 3$3,143 AUD
Retailer 4$3,181 AUD
Retailer 2$3,221 AUD
Retailer 10$3,347 AUD
Retailer 6$3,400 AUD
Retailer 5$3,746 AUD
Retailer 8$3,834 AUD
Retailer 9$5,487 AUD

31 data points across 10 retailers

16 retailers$2,203 AUD to $6,567 AUD

A
Cheapest Retailer
-
$2,203 AUD
A
Retailer 2
-
$2,818 AUD
View
A
Retailer 3
-
$2,837 AUD
View
A
Retailer 4
-
$3,141 AUD
View
A
Retailer 5
-
$3,143 AUD
View
A
Retailer 6
-
$3,164 AUD
View
A
Retailer 7
-
$3,181 AUD
View
A
Retailer 8
-
$3,221 AUD
View
Retailer 9
-
$3,257 AUD
View
Price last confirmed 38 days ago
A
Retailer 10
-
$3,286 AUD
View
A
Retailer 11
-
$3,347 AUD
View
A
Retailer 12
-
$3,400 AUD
View
A
Retailer 13
-
$3,746 AUD
View
B+
Retailer 14
-
$3,834 AUD
View
B
Retailer 15
-
$5,487 AUD
View
Most Expensive
B
NZ Jewellers
971c76ed-7970-4c2e-8b78-b3f5b9ec9263 · Nov 5
$6,567 AUD
$4,597 USD
View
15 more retailers have this diamond
Prices start from $2,203 AUDSave up to $4,364 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
$2,203 AUD