First of all, it's a stock picture, not much of a description, and the seller has zero feedback. Look at the price.....I don't know about this one. What do you think?
"the material is green so is the lava in side"
Makes no sense. if you were selling a Mathmos Smart you'd think they would know it and at least put it in the heading. On the other hand we have all picked up a bargain from some poor hapless soul who doesnt have a clue what they're selling!
But i would be wary too. at least ask for pics of the actual lamp, i'm always concerned when people use the advertising pic :)