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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6565511617

Certificate GIA 6565511617

Diamond specifications and retailer prices

From $3,241 AUD
As of November 6, 2026
Save $3,035 AUD (48%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $6,276 AUD at With Clarity · As of November 6, 2026
View at With Clarity

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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565511617. Listed at 6 retailers as of November 6, 2026, with prices from $3,241 to $6,276, a $3,035 spread on the same certified stone. With Clarity lists it at $6,276. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565511617
Dimensions6.93 × 6.98 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Cavity, Needle
Top View
6.93 mm6.98 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6565511617
Side View
Table 57.0%Crown 36.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.7%

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: $3,241 AUD|Low: $3,241 AUD|High: $6,401 AUD|Avg: $4,489 AUD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
With Clarity
November 6, 2026
Retailer 1$3,241 AUD
Retailer 4$3,493 AUD
Retailer 5$3,925 AUD
Retailer 3$4,410 AUD
Retailer 2$4,500 AUD
With Clarity$6,276 AUD

8 data points across 6 retailers

6 retailers$3,241 AUD to $6,276 AUD

A
Cheapest Retailer
-
$3,241 AUD
A
Retailer 2
-
$3,493 AUD
View
A
Retailer 3
-
$3,925 AUD
View
A
Retailer 4
-
$4,410 AUD
View
A
Retailer 5
-
$4,500 AUD
View
Most Expensive
B+
With Clarity
6565511617 · Nov 6
$6,276 AUD
$4,312 USD
View
5 more retailers have this diamond
Prices start from $3,241 AUDSave up to $3,035 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
$3,241 AUD