Hey there @sankar 
You’ve already gotten some great answers here and I just wanted to chime in! 
First, those are some wonderful crystals that you have. I don’t personally work with too many crystals but when I do, I tend to just carry them around with me or add them to different spells to amplify or call in that energy. I know there are also a few people here in the forum who really enjoy making crystal grids. Maybe you want to give that a try, too?
Here are a few links to get you started!
→ ❋ Flower of Life Crystal Grid: Printable Matrix
→ Creating Crystal Grids 
→ Crystal Grid For Love
→ Abundance Crystal Grid: Jupiter’s Sigil