I just googled Lapis and lapis lazuli comes up and it is shown to be a shortening for lapis lazuli. So I'd say it's the same thing. I was curious about this myself. Just keep in mind that not all rocks, crystals, and gems look alike. They may be selling a lapis lazuli that is it's signature blue and some that are more faded (maybe it's rough, not tumbled). But any rock and crystal you buy may have its own imperfections or variances.