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Round|Natural|GIA

1.30ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 5553178312

Certificate GIA 5553178312

Diamond specifications and retailer prices

From $4,433 AUD
As of November 4, 2026
Save $4,668 AUD (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,714 AUD at NZ Jewellers · As of September 28, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553178312. Listed at 11 retailers as of November 2, 2026, with a 105% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5553178312
Dimensions7.05 × 6.99 × 4.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot, Needle
Top View
7.05 mm6.99 mm1.30 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553178312
Side View
Table 60.0%Crown 32.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.3%

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: $8,052 AUD|Low: $3,473 AUD|High: $9,210 AUD|Avg: $5,650 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$3,473 AUD
Retailer 11$4,304 AUD
Retailer 6$4,433 AUD
Retailer 3$4,645 AUD
Retailer 10$5,333 AUD
Retailer 4$5,513 AUD
Retailer 8$5,575 AUD
Retailer 7$5,784 AUD
Retailer 2$6,117 AUD
NZ Jewellers$8,052 AUD
Retailer 5$9,101 AUD

26 data points across 11 retailers

11 retailers$4,433 AUD to $9,101 AUD

A
Cheapest Retailer
-
$4,433 AUD
Final sale: no returns
A
Retailer 2
-
$4,640 AUD
View
Retailer 3
-
$5,021 AUD
View
Price last confirmed 43 days ago
A
Retailer 4
-
$5,513 AUD
View
Retailer 5
-
$5,575 AUD
View
Price last confirmed 36 days ago
Retailer 6
-
$5,575 AUD
View
Price last confirmed 38 days ago
A
Retailer 7
-
$5,784 AUD
View
A
Retailer 8
-
$6,117 AUD
View
Retailer 9
-
$6,434 AUD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$9,101 AUD
View
Most Expensive
NZ Jewellers
fbeeebe6-7d66-4b3e-8316-f3e6c4fcc989 · Sep 28
$9,714 AUD
$6,800 USD
View
Price last confirmed 39 days ago
10 more retailers have this diamond
Prices start from $4,433 AUDSave up to $4,668 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
$4,433 AUD