This is a really beautiful piece of natural quartz crystal for those that can see past the second mineral on top of it. I'm not sure what the second mineral is. I tried soaking it in vinegar to no effect. Those that know more about Scottish mineral specimens might be better placed for a bargain if they know what it is!
The quartz underneath is sparkly and lovely. It'll look great in a crystal cabinet. Check out the video, it's a pretty crystal.