Colorwise collectors would call this opalescent, possibly moonstone. It appears to have a yellow cast so perhaps yellowish opalescent is better.
The bottle does have a rolled lip and a pontil mark which suggests the age to be mid 19th century. It has a European origin feel to me as well.
As to the actual age, I am not entirely sure. I hold out the option that it could be modern but I would have to handle it to know better...