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Round|Natural|GIA

1.30ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 1399808576

Certificate GIA 1399808576

Diamond specifications and retailer prices

From $6,360 AUD
As of November 6, 2026
Save $11,473 AUD (64%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $17,832 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 1399808576. Listed at 10 retailers as of November 5, 2026, with prices from $6,360 to $17,832, a $11,473 spread on the same certified stone. Diamond Quarter lists it at $17,832. 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 1399808576
Dimensions7.02 × 6.98 × 4.30 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.02 mm6.98 mm1.30 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1399808576
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41°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: $9,181 AUD|Low: $6,360 AUD|High: $9,387 AUD|Avg: $7,953 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6$6,360 AUD
Retailer 7$6,491 AUD
Retailer 8$6,928 AUD
Retailer 4$7,982 AUD
Retailer 3$8,514 AUD
Retailer 5$8,514 AUD
Retailer 9$8,800 AUD
Retailer 2$9,158 AUD
Retailer 1$9,181 AUD

40 data points across 9 retailers

10 retailers$6,360 AUD to $17,832 AUD

A
Cheapest Retailer
-
$6,360 AUD
A
Retailer 2
-
$6,491 AUD
View
A
Retailer 3
-
$6,928 AUD
View
B+
Retailer 4
-
$7,982 AUD
View
B+
Retailer 5
-
$8,514 AUD
View
B+
Retailer 6
-
$8,514 AUD
View
B+
Retailer 7
-
$8,800 AUD
View
B+
Retailer 8
-
$9,158 AUD
View
B+
Retailer 9
-
$9,181 AUD
View
Most Expensive
B
Diamond Quarter
1.3SI2D13765D26N · Nov 5
$17,832 AUD
£9,829 GBP
View
9 more retailers have this diamond
Prices start from $6,360 AUDSave up to $11,473 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
$6,360 AUD