Materials basically having a non crystalline structure are : glass (also known as fused silica), rubber, and certain plastics(specially thermosetting plastics).
Non crystalline structure is defined as the atoms that are not organized in the fixed lattice pattern.
It is not the composition of the crystal.
The solids is halved in the equal parts.
For example : Graphite is a non crystalline forms of carbon, also diamond.
It have short range of order.
It is also called as "Psuedo Solids"
The dilemma is to get the design function and quality of the material must be up to the mark where as in the manufacturing the material may or may not be strong can be take as consideration.
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