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Ruby-sapphire Properties

Ceramic Properties

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Robellaz & Cie SA
2, Rue de France
CH-1450 Sainte-Croix
Tél. +41 (0)24 454 27 28
Fax +41 (0)24 454 32 26

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Materials

Ruby-sapphire and synthetic gems
Ceramic

Properties of ruby-sapphire and synthetic gems

Single-crystal sapphire has a unique combination of physical, mechanical and chemical properties, that make it suitable for an extremely wide range of applications:

high mechanical resistance
high thermal stability
very good heat transmission
high optical transmission in ultraviolet, visible and infrared spectrums
very high wear resistance
chemical inertia
zero porosity
very high insulation
the highest hardness next to diamond

Technical properties

Ceramic

Ceramics have a unique combination of physical, mechanical, chemical and especially the ability to produce complex designs pieces.

Zirconia

High wear resistance and crack growth
Chemical inertness
High hardness

Alumina

High temperature
High electrical resistivity
Chemical inertness

Technical properties