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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1558729376

Certificate GIA 1558729376

Diamond specifications and retailer prices

From $4,544 AUD
As of November 4, 2026
Save $5,758 AUD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $10,301 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 1558729376. Listed at 16 retailers as of November 4, 2026, with prices from $4,544 to $10,301, a $5,758 spread on the same certified stone. NZ Jewellers lists it at $10,301. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1558729376
Dimensions6.42 × 6.46 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.42 mm6.46 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558729376
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

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: $5,951 AUD|Low: $4,275 AUD|High: $9,888 AUD|Avg: $5,863 AUD|-10.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 5$4,544 AUD
Retailer 11$4,702 AUD
Retailer 3$5,090 AUD
Retailer 4$5,357 AUD
Retailer 13$5,357 AUD
Retailer 9$5,563 AUD
Retailer 2$5,827 AUD
Retailer 1$5,951 AUD
Retailer 12$6,181 AUD
Retailer 8$6,469 AUD
Retailer 14$6,692 AUD
Retailer 6$6,954 AUD
Retailer 7$7,217 AUD
Retailer 10$9,888 AUD

39 data points across 14 retailers

16 retailers$4,544 AUD to $10,301 AUD

B+
Cheapest Retailer
-
$4,544 AUD
B+
Retailer 2
-
$4,621 AUD
View
B+
Retailer 3
-
$4,702 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,090 AUD
View
B+
Retailer 5
-
$5,357 AUD
View
B+
Retailer 6
-
$5,357 AUD
View
B+
Retailer 7
-
$5,563 AUD
View
B+
Retailer 8
-
$5,827 AUD
View
B+
Retailer 9
-
$5,827 AUD
View
B+
Retailer 10
-
$5,951 AUD
View
B+
Retailer 11
-
$6,181 AUD
View
B+
Retailer 12
-
$6,469 AUD
View
B
Retailer 13
-
$6,954 AUD
View
B
Retailer 14
-
$7,217 AUD
View
B
Retailer 15
-
$9,888 AUD
View
Most Expensive
B
NZ Jewellers
9e420a83-dc25-4924-8280-fa19a2fa8ce1 · Nov 5
$10,301 AUD
$7,078 USD
View
15 more retailers have this diamond
Prices start from $4,544 AUDSave up to $5,758 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
$4,544 AUD