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Round|Natural|GIA

1.30ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6421958848

Certificate GIA 6421958848

Diamond specifications and retailer prices

From $6,493 AUD
As of November 4, 2026
Save $7,251 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,743 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421958848. Listed at 22 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6421958848
Dimensions7.03 × 7.00 × 4.29 mm
L/W Ratio1.00
Top View
7.03 mm7.00 mm1.30 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceVery Strong
CertificateGIA 6421958848
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $13,017 AUD|Low: $6,298 AUD|High: $13,244 AUD|Avg: $8,741 AUD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5$6,542 AUD
Retailer 7$6,696 AUD
Retailer 8$6,871 AUD
Retailer 6$7,444 AUD
Retailer 2$7,885 AUD
Retailer 4$8,973 AUD
Retailer 9$9,066 AUD
Retailer 3$9,226 AUD
Retailer 1$13,017 AUD

41 data points across 9 retailers

22 retailers$6,493 AUD to $13,743 AUD

B+
Cheapest Retailer
-
$6,493 AUD
B+
Retailer 2
-
$6,542 AUD
View
B+
Retailer 3
-
$6,696 AUD
View
B+
Retailer 4
-
$6,871 AUD
View
Final sale: no returns
Retailer 5
-
$7,444 AUD
View
Price last confirmed 51 days ago
Retailer 6
-
$7,444 AUD
View
Price last confirmed 9 days ago
Retailer 7
-
$7,444 AUD
View
Price last confirmed 30 days ago
Retailer 8
-
$7,444 AUD
View
Price last confirmed 39 days ago
Retailer 9
-
$7,444 AUD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
$7,885 AUD
View
Retailer 11
-
$8,590 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$8,590 AUD
View
Price last confirmed 46 days ago
Retailer 13
-
$8,590 AUD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
$8,590 AUD
View
B+
Retailer 15
-
$8,973 AUD
View
Retailer 16
-
$9,066 AUD
View
Price last confirmed 23 days ago
B
Retailer 17
-
$9,226 AUD
View
B
Retailer 18
-
$13,017 AUD
View
B
Retailer 19
-
$13,743 AUD
View
Retailer 20
-
$13,743 AUD
View
Price last confirmed 49 days ago
Retailer 21
-
$13,743 AUD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
d35773a2-c96c-47b8-9da4-5526e54ccbe6 · Oct 20
$13,743 AUD
$9,443 USD
View
Price last confirmed 18 days ago
21 more retailers have this diamond
Prices start from $6,493 AUDSave up to $7,251 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.

B+
1.30ct Round
$6,493 AUD