This beautiful handmade piece is artist signed on the bottom (although I can't make it out). The outer colors are iridescent with that "oil spill" look. The inner is clear and black glass swirl. It's amazing to see such fluid movement in glass. This piece would be a stunning accent piece to your collection. Approximately 4" high and 5" wide. Weight approximately 10oz. In excellent pre-owned condition. No chips or cracks.