Realistic light in Illustrator.

I am a bit troubled, and i am wondering if there is a way to make a quite realistic light in illustrator (I need it to mimic effects such as sparkles I previously did in photoshop) without using the blending modes since it has to be in some occasion on transparent backgrounds.

So if you have tutorials or else regarding this matter I'd be more than thankful.

Hopefully picture will be more self explanatory.