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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494312059

Certificate GIA 2494312059

Diamond specifications and retailer prices

From $5,720 AUD
As of November 6, 2026
Save $6,891 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,796 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2494312059. Listed at 15 retailers as of November 5, 2026, with a 120% 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

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2494312059
Dimensions6.49 × 6.46 × 4.07 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.49 mm6.46 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2494312059
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 6
Current: $7,081 AUD|Low: $5,720 AUD|High: $11,666 AUD|Avg: $7,611 AUD|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$5,720 AUD
Retailer 5$5,887 AUD
Retailer 7$6,207 AUD
Retailer 9$6,558 AUD
Retailer 1$7,081 AUD
Retailer 6$7,296 AUD
Retailer 3$8,139 AUD
Retailer 2$8,831 AUD
Retailer 4$11,498 AUD

44 data points across 9 retailers

15 retailers$5,720 AUD to $12,611 AUD

B+
Cheapest Retailer
-
$5,720 AUD
B+
Retailer 2
-
$5,887 AUD
View
B+
Retailer 3
-
$6,207 AUD
View
B
Retailer 4
-
$6,558 AUD
View
Retailer 5
-
$6,558 AUD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$6,558 AUD
View
B
Retailer 7
-
$7,081 AUD
View
Retailer 8
-
$7,296 AUD
View
Price last confirmed 29 days ago
B
Retailer 9
-
$7,567 AUD
View
Retailer 10
-
$7,992 AUD
View
Price last confirmed 15 days ago
B
Retailer 11
-
$8,139 AUD
View
B
Retailer 12
-
$8,831 AUD
View
B
Retailer 13
-
$11,498 AUD
View
B
Retailer 14
-
$12,611 AUD
View
Most Expensive
Diamond Quarter
1.05SI1F2459DC59N · Nov 5
$16,796 AUD
£9,087 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $5,720 AUDSave up to $6,891 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+
1.05ct Round
$5,720 AUD