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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5426197929

Certificate GIA 5426197929

Diamond specifications and retailer prices

From $4,192 AUD
As of November 6, 2026
Save $7,319 AUD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,511 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 5426197929. Listed at 19 retailers as of November 5, 2026, with prices from $4,192 to $11,511, a $7,319 spread on the same certified stone. Diamond Quarter lists it at $11,511. 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 angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5426197929
Dimensions6.55 × 6.54 × 4.02 mm
L/W Ratio1.00
Top View
6.55 mm6.54 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5426197929
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.5%

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: $6,864 AUD|Low: $3,927 AUD|High: $9,518 AUD|Avg: $5,743 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6$4,192 AUD
Retailer 2$4,336 AUD
Retailer 8$4,701 AUD
Retailer 7$4,788 AUD
Retailer 10$5,290 AUD
Retailer 4$5,660 AUD
Retailer 9$6,024 AUD
Retailer 3$6,530 AUD
Retailer 1$6,864 AUD
Retailer 5$9,406 AUD

43 data points across 10 retailers

19 retailers$4,192 AUD to $11,511 AUD

A
Cheapest Retailer
-
$4,192 AUD
B+
Retailer 2
-
$4,701 AUD
View
Final sale: no returns
B+
Retailer 3
-
$4,785 AUD
View
B+
Retailer 4
-
$4,788 AUD
View
Retailer 5
-
$5,095 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$5,095 AUD
View
B+
Retailer 7
-
$5,290 AUD
View
B+
Retailer 8
-
$5,660 AUD
View
B+
Retailer 9
-
$5,730 AUD
View
B+
Retailer 10
-
$5,763 AUD
View
B+
Retailer 11
-
$5,763 AUD
View
B+
Retailer 12
-
$5,878 AUD
View
B+
Retailer 13
-
$5,967 AUD
View
Retailer 14
-
$6,024 AUD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$6,530 AUD
View
B
Retailer 16
-
$6,864 AUD
View
B
Retailer 17
-
$9,406 AUD
View
B
Retailer 18
-
$9,798 AUD
View
Most Expensive
B
Diamond Quarter
1.05SI1F5429FE07N · Nov 5
$11,511 AUD
£6,228 GBP
View
18 more retailers have this diamond
Prices start from $4,192 AUDSave up to $7,319 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
1.05ct Round
$4,192 AUD