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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7551404033

Certificate GIA 7551404033

Diamond specifications and retailer prices

From $4,385 AUD
As of November 6, 2026
Save $5,726 AUD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,111 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 7551404033. Listed at 19 retailers as of November 5, 2026, with prices from $4,385 to $10,111, a $5,726 spread on the same certified stone. NZ Jewellers lists it at $10,111. 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 angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7551404033
Dimensions6.94 × 6.97 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.94 mm6.97 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551404033
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

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: $10,111 AUD|Low: $4,355 AUD|High: $10,266 AUD|Avg: $6,374 AUD|-1.5%
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
November 6, 2026
Retailer 2$4,385 AUD
Retailer 16$4,890 AUD
Retailer 5$5,107 AUD
Retailer 9$5,199 AUD
Retailer 6$5,356 AUD
Retailer 14$5,538 AUD
Retailer 10$5,715 AUD
Retailer 4$5,804 AUD
Retailer 7$5,804 AUD
Retailer 13$5,842 AUD
Retailer 12$6,017 AUD
Retailer 11$6,207 AUD
Retailer 15$6,459 AUD
Retailer 3$6,635 AUD
Retailer 18$6,696 AUD
Retailer 17$7,083 AUD
Retailer 8$9,558 AUD
NZ Jewellers$10,111 AUD

25 data points across 18 retailers

19 retailers$4,385 AUD to $10,111 AUD

A
Cheapest Retailer
-
$4,385 AUD
A
Retailer 2
-
$4,890 AUD
View
A
Retailer 3
-
$5,107 AUD
View
A
Retailer 4
-
$5,199 AUD
View
B+
Retailer 5
-
$5,356 AUD
View
Final sale: no returns
B+
Retailer 6
-
$5,538 AUD
View
Retailer 7
-
$5,715 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$5,804 AUD
View
B+
Retailer 9
-
$5,804 AUD
View
B+
Retailer 10
-
$5,842 AUD
View
B+
Retailer 11
-
$6,017 AUD
View
Retailer 12
-
$6,168 AUD
View
Price last confirmed 30 days ago
B+
Retailer 13
-
$6,207 AUD
View
B+
Retailer 14
-
$6,459 AUD
View
B+
Retailer 15
-
$6,635 AUD
View
B+
Retailer 16
-
$6,696 AUD
View
B+
Retailer 17
-
$7,083 AUD
View
B
Retailer 18
-
$9,558 AUD
View
Most Expensive
B
NZ Jewellers
8b23a696-8712-4267-9c29-99c8d121a534 · Nov 5
$10,111 AUD
$6,947 USD
View
18 more retailers have this diamond
Prices start from $4,385 AUDSave up to $5,726 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
$4,385 AUD