This little stone comes from the shore in South Queensferry, where I grew up. I've had it on my desk for several years, reminding me where I come from. I use it as a sort of meditation aid and "worry bead". I know its contours and composition so well I can handle it in my imagination almost as well as real life. It's partly quartz, so the light shines through, it's cool and smooth. It means a lot to me.