Just wanted to ask, is there any where you can standard glass shader/material which you can add on an object in clone? 

There are a lot of free Substance glass materials available on the web that can be used. There are also a few simple ones included with iClone in Content > Media > Traditional.

Gerry

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System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.

Yeah I know about those, I'm actually after clear glass that you can see through like ordinary window glass.

What I found worked well for me (as far as a window is concerned) was to use the new reflection/mirror prop, then reduce the opacity and play with the reflection strength and reflection blur. It took a bit of experimenting, but I thought added enough detail to make it believable. 
Good luck.
Terry