Ewer, Weed Pot, Decanter...?

I bought this piece a while ago for the unique shape and design ans blend of colors. I love the hints of light blue peeking through the shades of green.

I've searched for the mark but have not had any luck. Also, this piece is unique (to me) for the triangle impressed on the side and the droplet stamp under the top of the handle.

Anyone out there know the significance of the triangle or droplet?
Thanks! :)