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Metalle

Gold
Colour Yellow
Density 19,32 g/cm³
Melting point 1.064,18°C
Properties Good conductor of heat and electricity, can be rolled out or beaten extremely thin > gold leaf 0.0014 mm!
Advantages Unique colour, good workability, high resistance to chemicals
Our alloys 8 kt, 14 kt and 18 kt in popular alloy colours
Our hardnesses 130 – 223 HV depending on the purityhardness')
Silver
Colour Radiant white
Density 10,49 g/cm³
Melting point 961,78°C
Properties Excellent electrical and almost the highest thermal conductivity, antibacterial effect in medical applications
Advantages High reflection of light, most ductile material: filaments of 2 km in length weigh only 0.1 to 1 g (filigree wire)
Our alloys Silver 925/000
Our hardnesses 160 HVhardness')
Platinum
Colour Shiny grey-white
Density 21,45 g/cm³
Melting point 1.768,3°C
Properties Specific weight higher than gold, lowest thermal expansion (metre standard in Paris), rarest of all precious metals
Advantages Maximum resistance to corrosion > can only be dissolved in hot aqua regia
Our alloys Pt 950/000 Pt 600/000
Our hardnesses 170 HVhardness')
Palladium
Colour Silvery grey
Density 11,99 g/cm³
Melting point 1554,9°C
Properties Metal in the platinum group; natural colour without surface finishing
Advantages Resistant to tarnishing, as hard-wearing as gold
Our alloys PD500 – Colour dark grey PD950 – Colour pale grey
Our hardnesses 140 - 170 HVhardness')