How to differentiate an ICE

You all sure like to have an cold drink when it's hot right ? hhha,, it's normal laa. But many from us do not care about the type of ice used. There are two type of ice, made from water that from freshly from tap and water that have been boiled. 

Raw ice is an ice that is white in color because there are many gas trapped inside it..Normally , block ice is made from raw or air mentah . This type of water is surely not good for our body. Diminum atau dimakan adalah dilarang sama sekali.

Ice from water that have been cooked is crystal
clear because all the gas trapped inside flow out 
when the boiling process occur . *CHEMISTRY .
Now a days , crystal ice are widely used , it's cube and have hole at the center .