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Round|Natural|GIA

1.30ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1538383423

Certificate GIA 1538383423

Diamond specifications and retailer prices

From $4,823 AUD
As of November 3, 2026
Save $5,075 AUD (51%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $10,565 AUD at NZ Jewellers · As of September 26, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1538383423. Listed at 12 retailers as of November 1, 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1538383423
Dimensions6.97 × 6.94 × 4.33 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
6.97 mm6.94 mm1.30 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538383423
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.2%

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 3
Current: $8,755 AUD|Low: $3,774 AUD|High: $10,017 AUD|Avg: $6,118 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12$3,774 AUD
Retailer 9$4,823 AUD
Retailer 4$5,025 AUD
Retailer 3$5,243 AUD
Retailer 5$5,385 AUD
Retailer 2$5,663 AUD
Retailer 6$5,997 AUD
Retailer 10$6,064 AUD
Retailer 11$6,275 AUD
Retailer 7$6,443 AUD
NZ Jewellers$8,755 AUD
Retailer 8$9,898 AUD

28 data points across 12 retailers

12 retailers$4,823 AUD to $9,898 AUD

A
Cheapest Retailer
-
$4,823 AUD
Final sale: no returns
A
Retailer 2
-
$5,033 AUD
View
A
Retailer 3
-
$5,385 AUD
View
A
Retailer 4
-
$5,663 AUD
View
A
Retailer 5
-
$5,997 AUD
View
Retailer 6
-
$6,064 AUD
View
Price last confirmed 36 days ago
Retailer 7
-
$6,064 AUD
View
Price last confirmed 38 days ago
A
Retailer 8
-
$6,275 AUD
View
A
Retailer 9
-
$6,443 AUD
View
Retailer 10
-
$6,997 AUD
View
Price last confirmed 38 days ago
B+
Retailer 11
-
$9,898 AUD
View
Most Expensive
NZ Jewellers
47524fe3-ea46-402d-b839-9160e9e734d1 · Sep 26
$10,565 AUD
$7,396 USD
View
Price last confirmed 40 days ago
11 more retailers have this diamond
Prices start from $4,823 AUDSave up to $5,075 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
$4,823 AUD