Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1543856619

Certificate GIA 1543856619

Diamond specifications and retailer prices

From $6,142 AUD
As of November 2, 2026
21 retailers carry this diamond
Most expensive: $9,956 AUD at NZ Jewellers · As of October 27, 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 1543856619. Listed at 21 retailers as of November 3, 2026, with a relatively tight 0% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1543856619
Dimensions6.93 × 6.89 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.93 mm6.89 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543856619
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $9,956 AUD|Low: $4,285 AUD|High: $10,269 AUD|Avg: $6,008 AUD|-0.8%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 3, 2026
Retailer 11$4,285 AUD
Retailer 17$4,596 AUD
Retailer 6$4,650 AUD
Retailer 8$4,755 AUD
Retailer 7$4,780 AUD
Retailer 9$4,977 AUD
Retailer 21$4,992 AUD
Retailer 5$5,178 AUD
Retailer 12$5,178 AUD
Retailer 10$5,376 AUD
Retailer 18$5,529 AUD
Retailer 20$5,774 AUD
Retailer 19$5,865 AUD
Retailer 3$5,974 AUD
Retailer 2$6,142 AUD
Retailer 13$6,142 AUD
Retailer 16$6,298 AUD
Retailer 15$6,520 AUD
Retailer 22$6,789 AUD
Retailer 4$6,958 AUD
Retailer 14$9,571 AUD
NZ Jewellers$9,956 AUD

24 data points across 22 retailers

21 retailers$6,142 AUD to $6,142 AUD

Retailer 1
-
$4,285 AUD
Price last confirmed 9 days ago
Retailer 2
-
$4,596 AUD
View
Price last confirmed 10 days ago
Retailer 3
-
$4,650 AUD
View
Price last confirmed 11 days ago
Retailer 4
-
$4,755 AUD
View
Price last confirmed 10 days ago
Retailer 5
-
$4,977 AUD
View
Price last confirmed 10 days ago
Retailer 6
-
$4,992 AUD
View
Price last confirmed 11 days ago
Retailer 7
-
$5,178 AUD
View
Price last confirmed 13 days ago
Retailer 8
-
$5,178 AUD
View
Price last confirmed 12 days ago
Retailer 9
-
$5,376 AUD
View
Price last confirmed 13 days ago
Retailer 10
-
$5,529 AUD
View
Price last confirmed 10 days ago
Retailer 11
-
$5,774 AUD
View
Price last confirmed 10 days ago
Retailer 12
-
$5,865 AUD
View
Price last confirmed 10 days ago
Retailer 13
-
$5,974 AUD
View
Price last confirmed 11 days ago
B+
Retailer 14
-
$6,142 AUD
View
B+
Retailer 15
-
$6,142 AUD
View
Retailer 16
-
$6,298 AUD
View
Price last confirmed 10 days ago
Retailer 17
-
$6,520 AUD
View
Price last confirmed 15 days ago
Retailer 18
-
$6,555 AUD
View
Price last confirmed 34 days ago
Retailer 19
-
$6,958 AUD
View
Price last confirmed 11 days ago
Retailer 20
-
$9,571 AUD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
5bfc9080-0353-4531-934b-2b0baa6d6605 · Oct 27
$9,956 AUD
$6,841 USD
View
Price last confirmed 10 days ago
20 more retailers have this diamond
Prices start from $6,142 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.

B+
1.30ct Round
$6,142 AUD