Round|Natural|GIA

1.30ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 7518928166

Certificate GIA 7518928166

Diamond specifications and retailer prices

From $6,084 AUD
As of November 4, 2026
Save $6,795 AUD (53%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $12,879 AUD at NZ Jewellers · As of October 20, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7518928166. Listed at 28 retailers as of November 4, 2026, with a 112% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7518928166
Dimensions6.87 × 6.94 × 4.34 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
6.87 mm6.94 mm1.30 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7518928166
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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 4
Current: $8,664 AUD|Low: $5,903 AUD|High: $12,412 AUD|Avg: $7,835 AUD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 4$6,084 AUD
Retailer 11$6,293 AUD
Retailer 2$6,438 AUD
Retailer 10$6,975 AUD
Retailer 6$7,362 AUD
Retailer 12$7,384 AUD
Retailer 8$7,390 AUD
Retailer 3$7,762 AUD
Retailer 7$8,408 AUD
Retailer 1$8,664 AUD
Retailer 5$9,395 AUD
Retailer 9$12,231 AUD

34 data points across 12 retailers

28 retailers$6,084 AUD to $12,879 AUD

A
Cheapest Retailer
-
$6,084 AUD
A
Retailer 2
-
$6,293 AUD
View
A
Retailer 3
-
$6,438 AUD
View
Final sale: no returns
A
Retailer 4
-
$6,571 AUD
View
Retailer 5
-
$6,975 AUD
View
Price last confirmed 8 days ago
Retailer 6
-
$6,975 AUD
View
Price last confirmed 50 days ago
Retailer 7
-
$6,975 AUD
View
Price last confirmed 29 days ago
Retailer 8
-
$6,975 AUD
View
Price last confirmed 21 days ago
Retailer 9
-
$6,975 AUD
View
Price last confirmed 38 days ago
Retailer 10
-
$6,975 AUD
View
Price last confirmed 15 days ago
A
Retailer 11
-
$7,362 AUD
View
B+
Retailer 12
-
$7,384 AUD
View
Retailer 13
-
$7,384 AUD
View
Price last confirmed 28 days ago
A
Retailer 14
-
$7,390 AUD
View
Retailer 15
-
$7,762 AUD
View
Price last confirmed 28 days ago
Retailer 16
-
$8,050 AUD
View
Price last confirmed 45 days ago
Retailer 17
-
$8,050 AUD
View
Price last confirmed 28 days ago
Retailer 18
-
$8,050 AUD
View
Price last confirmed 16 days ago
B+
Retailer 19
-
$8,050 AUD
View
B+
Retailer 20
-
$8,408 AUD
View
Retailer 21
-
$8,498 AUD
View
Price last confirmed 22 days ago
B+
Retailer 22
-
$8,664 AUD
View
B+
Retailer 23
-
$9,395 AUD
View
B
Retailer 24
-
$12,231 AUD
View
B
Retailer 25
-
$12,879 AUD
View
Retailer 26
-
$12,879 AUD
View
Price last confirmed 48 days ago
Retailer 27
-
$12,879 AUD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
2682f6d3-f1db-4e26-aa79-b95c94e1323a · Oct 20
$12,879 AUD
$9,016 USD
View
Price last confirmed 16 days ago
27 more retailers have this diamond
Prices start from $6,084 AUDSave up to $6,795 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
$6,084 AUD