The one on the left looks quality (more on that later) and resembles some Davidson in texture, even Ravenhead and has a feel of the better Ravenhead stuff.
However, my doubts about the quality came about whilst using them. One exploded when a candle burnt right down into it.
The interesting thing about the bigger one is that it is made to take 2 types of candle. A candle stick and a ball candle. I'm sure this was a way to say to Iittala - we're not ripping you off, we're improving!