Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494311908

Certificate GIA 2494311908

Diamond specifications and retailer prices

From €3,133 EUR
As of November 6, 2026
Save €3,714 EUR (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €9,329 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 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: €4,439 EUR|Low: €3,133 EUR|High: €6,334 EUR|Avg: €4,183 EUR|+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€3,133 EUR
Retailer 5€3,189 EUR
Retailer 7€3,399 EUR
Retailer 9€3,560 EUR
Retailer 2€3,956 EUR
Retailer 6€4,192 EUR
Retailer 1€4,439 EUR
Retailer 3€4,794 EUR
Retailer 4€6,242 EUR

42 data points across 9 retailers

15 retailers€3,133 EUR to €6,847 EUR

B+
Cheapest Retailer
-
€3,133 EUR
B+
Retailer 2
-
€3,189 EUR
View
B+
Retailer 3
-
€3,399 EUR
View
B+
Retailer 4
-
€3,560 EUR
View
Retailer 5
-
€3,560 EUR
View
Price last confirmed 9 days ago
B+
Retailer 6
-
€3,560 EUR
View
B+
Retailer 7
-
€3,956 EUR
View
B
Retailer 8
-
€4,108 EUR
View
Retailer 9
-
€4,192 EUR
View
Price last confirmed 29 days ago
B
Retailer 10
-
€4,439 EUR
View
Retailer 11
-
€4,446 EUR
View
Price last confirmed 15 days ago
B
Retailer 12
-
€4,794 EUR
View
B
Retailer 13
-
€6,242 EUR
View
B
Retailer 14
-
€6,847 EUR
View
Most Expensive
Diamond Quarter
1.05SI1F2408386BN · Nov 5
€9,329 EUR
£8,201 GBP
View
Price under review
14 more retailers have this diamond
Prices start from €3,133 EURSave up to €3,714 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.

B+
1.05ct Round
€3,133 EUR