Badash - Azure Murano Style Art Glass 6 inch Vase

Is the vase all blue or the blue green that is shown in some of the images?

Is this vase’s sides slender/straight’ (like image shown) or more ‘bowed’ (like customer image provided)?

The glass is very rough at the center opening where they cut the glass at a slant, is this how it is supposed to be?

Is this crystal