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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6545016555

Certificate GIA 6545016555

Diamond specifications and retailer prices

From $5,122 AUD
As of November 4, 2026
Save $6,070 AUD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,192 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6545016555. Listed at 20 retailers as of November 4, 2026, with prices from $5,122 to $11,192, a $6,070 spread on the same certified stone. NZ Jewellers lists it at $11,192. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
OriginNatural
Grading LabGIA
CertificateGIA 6545016555
Dimensions7.04 × 7.01 × 4.32 mm
L/W Ratio1.00
Star length50%
Top View
7.04 mm7.01 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545016555
Side View
Table 59.0%Crown 32.5°Girdle: ThickPavilionCulet: NoneDepth 61.4%

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: $6,148 AUD|Low: $5,122 AUD|High: $10,354 AUD|Avg: $6,822 AUD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$5,122 AUD
Retailer 6$5,218 AUD
Retailer 1$6,148 AUD
Retailer 2$6,466 AUD
Retailer 7$6,852 AUD
Retailer 4$7,223 AUD
Retailer 3$7,837 AUD
Retailer 5$10,231 AUD

37 data points across 8 retailers

20 retailers$5,122 AUD to $11,192 AUD

A
Cheapest Retailer
-
$5,122 AUD
A
Retailer 2
-
$5,218 AUD
View
A
Retailer 3
-
$5,322 AUD
View
B+
Retailer 4
-
$5,552 AUD
View
B+
Retailer 5
-
$5,820 AUD
View
Retailer 6
-
$5,820 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$5,820 AUD
View
B+
Retailer 8
-
$6,148 AUD
View
B+
Retailer 9
-
$6,190 AUD
View
B+
Retailer 10
-
$6,466 AUD
View
B+
Retailer 11
-
$6,564 AUD
View
B+
Retailer 12
-
$6,564 AUD
View
B+
Retailer 13
-
$6,715 AUD
View
B+
Retailer 14
-
$6,782 AUD
View
Retailer 15
-
$6,852 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$7,223 AUD
View
Retailer 17
-
$7,268 AUD
View
Price last confirmed 15 days ago
B
Retailer 18
-
$7,837 AUD
View
B
Retailer 19
-
$10,231 AUD
View
Most Expensive
B
NZ Jewellers
000d3fba-2572-4293-a4fc-6348af70821a · Nov 5
$11,192 AUD
$7,690 USD
View
19 more retailers have this diamond
Prices start from $5,122 AUDSave up to $6,070 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
$5,122 AUD