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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 $4,360 CAD
As of November 4, 2026
Save $5,525 CAD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,885 CAD 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 $4,360 to $9,885, a $5,525 spread on the same certified stone. NZ Jewellers lists it at $9,885. 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
Color
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: $5,711 CAD|Low: $4,102 CAD|High: $9,489 CAD|Avg: $5,624 CAD|-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$4,360 CAD
Retailer 11$4,512 CAD
Retailer 3$4,884 CAD
Retailer 4$5,141 CAD
Retailer 13$5,141 CAD
Retailer 9$5,338 CAD
Retailer 2$5,592 CAD
Retailer 1$5,711 CAD
Retailer 12$5,931 CAD
Retailer 8$6,208 CAD
Retailer 14$6,422 CAD
Retailer 6$6,673 CAD
Retailer 7$6,926 CAD
Retailer 10$9,489 CAD

40 data points across 14 retailers

16 retailers$4,360 CAD to $9,885 CAD

B+
Cheapest Retailer
-
$4,360 CAD
B+
Retailer 2
-
$4,434 CAD
View
B+
Retailer 3
-
$4,512 CAD
View
Final sale: no returns
B+
Retailer 4
-
$4,884 CAD
View
B+
Retailer 5
-
$5,141 CAD
View
B+
Retailer 6
-
$5,141 CAD
View
B+
Retailer 7
-
$5,338 CAD
View
B+
Retailer 8
-
$5,592 CAD
View
B+
Retailer 9
-
$5,592 CAD
View
B+
Retailer 10
-
$5,711 CAD
View
B+
Retailer 11
-
$5,931 CAD
View
B+
Retailer 12
-
$6,208 CAD
View
B
Retailer 13
-
$6,673 CAD
View
B
Retailer 14
-
$6,926 CAD
View
B
Retailer 15
-
$9,489 CAD
View
Most Expensive
B
NZ Jewellers
9e420a83-dc25-4924-8280-fa19a2fa8ce1 · Nov 5
$9,885 CAD
$7,078 USD
View
15 more retailers have this diamond
Prices start from $4,360 CADSave up to $5,525 CAD

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
$4,360 CAD