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Round|Natural|GIA

1.30ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6551414013

Certificate GIA 6551414013

Diamond specifications and retailer prices

From $3,127 AUD
As of November 6, 2026
Save $2,506 AUD (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,741 AUD at NZ Jewellers · As of October 3, 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 6551414013. Listed at 9 retailers as of November 4, 2026, with a 80% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6551414013
Dimensions7.03 × 7.07 × 4.23 mm
L/W Ratio1.01
Star length50%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.03 mm7.07 mm1.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551414013
Side View
Table 60.0%Crown 32°GirdlePavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,127 AUD|Low: $3,126 AUD|High: $5,715 AUD|Avg: $4,119 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 1$3,127 AUD
Retailer 2$3,483 AUD
Retailer 3$4,001 AUD
Retailer 4$5,633 AUD

43 data points across 4 retailers

9 retailers$3,127 AUD to $5,633 AUD

A
Cheapest Retailer
-
$3,127 AUD
Retailer 2
-
$3,224 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,224 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$3,311 AUD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$3,483 AUD
View
Retailer 6
-
$3,720 AUD
View
Price last confirmed 35 days ago
B+
Retailer 7
-
$4,001 AUD
View
B
Retailer 8
-
$5,633 AUD
View
Most Expensive
NZ Jewellers
b06b8636-3b9d-462a-905d-8f5a60f63d5a · Oct 3
$6,741 AUD
$4,719 USD
View
Price last confirmed 34 days ago
8 more retailers have this diamond
Prices start from $3,127 AUDSave up to $2,506 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
$3,127 AUD