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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494311908

Certificate GIA 2494311908

Diamond specifications and retailer prices

From $5,091 AUD
As of November 6, 2026
Save $6,036 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $15,159 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 2494311908. Listed at 15 retailers as of November 5, 2026, with a 119% 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
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2494311908
Dimensions6.55 × 6.53 × 4.05 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.55 mm6.53 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2494311908
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.9%

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: $7,213 AUD|Low: $5,091 AUD|High: $10,293 AUD|Avg: $6,798 AUD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$5,091 AUD
Retailer 5$5,181 AUD
Retailer 7$5,523 AUD
Retailer 9$5,785 AUD
Retailer 2$6,429 AUD
Retailer 6$6,811 AUD
Retailer 1$7,213 AUD
Retailer 3$7,791 AUD
Retailer 4$10,143 AUD

42 data points across 9 retailers

15 retailers$5,091 AUD to $11,127 AUD

B+
Cheapest Retailer
-
$5,091 AUD
B+
Retailer 2
-
$5,181 AUD
View
B+
Retailer 3
-
$5,523 AUD
View
B+
Retailer 4
-
$5,785 AUD
View
Retailer 5
-
$5,785 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$5,785 AUD
View
B+
Retailer 7
-
$6,429 AUD
View
B
Retailer 8
-
$6,676 AUD
View
Retailer 9
-
$6,811 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$7,213 AUD
View
Retailer 11
-
$7,225 AUD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$7,791 AUD
View
B
Retailer 13
-
$10,143 AUD
View
B
Retailer 14
-
$11,127 AUD
View
Most Expensive
Diamond Quarter
1.05SI1F2408386BN · Nov 5
$15,159 AUD
£8,201 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $5,091 AUDSave up to $6,036 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
$5,091 AUD