How to make a shiny/glossy ball?

See this link

I want to make a glossy ball(sphere) in unity. The ball needs to be in space not on GUI.

I am new to this, can anybody tell me how to do that using basic sphere in Unity3d or any downloadable model available someplace.
Please provide link for downloadable model.

You need to know how to create and use materials in Unity. Basically, create a sphere, and apply a glossy material.
Read the material component reference, and the manual page on materials.