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1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 5426197929

Certificate GIA 5426197929

Diamond specifications and retailer prices

From €2,580 EUR
As of November 6, 2026
Save €4,504 EUR (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €7,084 EUR 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 €2,580 to €7,084, a €4,504 spread on the same certified stone. Diamond Quarter lists it at €7,084. 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: €4,224 EUR|Low: €2,416 EUR|High: €5,858 EUR|Avg: €3,534 EUR|+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€2,580 EUR
Retailer 2€2,668 EUR
Retailer 8€2,893 EUR
Retailer 7€2,947 EUR
Retailer 10€3,256 EUR
Retailer 4€3,483 EUR
Retailer 9€3,707 EUR
Retailer 3€4,019 EUR
Retailer 1€4,224 EUR
Retailer 5€5,789 EUR

43 data points across 10 retailers

19 retailers€2,580 EUR to €7,084 EUR

A
Cheapest Retailer
-
€2,580 EUR
B+
Retailer 2
-
€2,893 EUR
View
Final sale: no returns
B+
Retailer 3
-
€2,945 EUR
View
B+
Retailer 4
-
€2,947 EUR
View
Retailer 5
-
€3,136 EUR
View
Price last confirmed 9 days ago
B+
Retailer 6
-
€3,136 EUR
View
B+
Retailer 7
-
€3,256 EUR
View
B+
Retailer 8
-
€3,483 EUR
View
B+
Retailer 9
-
€3,526 EUR
View
B+
Retailer 10
-
€3,547 EUR
View
B+
Retailer 11
-
€3,547 EUR
View
B+
Retailer 12
-
€3,618 EUR
View
B+
Retailer 13
-
€3,672 EUR
View
Retailer 14
-
€3,707 EUR
View
Price last confirmed 30 days ago
B
Retailer 15
-
€4,019 EUR
View
B
Retailer 16
-
€4,224 EUR
View
B
Retailer 17
-
€5,789 EUR
View
B
Retailer 18
-
€6,030 EUR
View
Most Expensive
B
Diamond Quarter
1.05SI1F5429FE07N · Nov 5
€7,084 EUR
£6,228 GBP
View
18 more retailers have this diamond
Prices start from €2,580 EURSave up to €4,504 EUR

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
€2,580 EUR