I have experimented also with my gemstones, I found that it depends on where I am and what I am doing, sometimes I will carry one or two in my pocket. At my work there are a lot of negative people. I keep on my desk quartz, rose quartz and amber. When I travel I take a small pouch with Hematite, amethyst and aquamarine. I wear a small black tourmaline if I think the day is going to be a bad one!