Aww thanks lol
The post is more likely to get replies here
Francesa by the time you have the stone in your hand I would hope that you woul dhave already shortlisted it lol. Picking stones is an art, there are many ways, but the one that you seem to be talking about sounds like a cross between intuitive choice and energy reading. You will know when you hold a stone if you like it or not, some may make you want to throw them down others you won't want to let go of

Some will jump out and scream Take Me!
A feeling of contentment is hard to define, but if the stone is right it should feel good, but sometimes stones that we need arent always the ones we choose and want to hold. This is because there are parts of us that need the stones energy, somewhere the stone will be working on us and that can sometimes be uncomfortable, and make us feel not quite right, this soon passes though.
Do you have a particular stone in mind or an experience?