I think it's a coralberry. I bought a
plant that looks the same (although yours might be a tad darker, but could just be the picture, or could be the natural variance among
plants) that was not labeled. I saw a picture in a
plant book of coralberry, and decided that was it, after also doing a web-search for more pictures. Mine also has no berries, but they apparently only fruit outdoors, or in high indoor light. They don't like to dry out (water when surface just begins to dry), and though they need high light to fruit, mine has been
growing in low-light (putting on new growth). But I could be wrong in my ID, I have a hard time ID'ing from pictures unless I see many pictures of different
plants of the same variety. Do a pic search and see what you think.