can I ask something is the second pic on top between the three of the bottom… cause I do know that if you have rings it shows that its been taken off after being hand blown…there is the new and the old… cause on the second pics its hard to see that…

http://www.glassofvenice.com/home-decor/murano-glass-vases.html?gclid=CjwKEAiA8dDEBRDf19yI97eO0UsSJAAY_yCSbuFm7NkQrgBu0ZyeR2Qtvl_PmYZ4bl-1LhjDd-hMDhoCqDzw_wcB&filters=83

As you can see from this link it is certainly in that style !! There are so many different styles mfrs from the Murano area that there is no way to know who may have made your vase !! Most all would have had a stick on label,, only rarely are they marked !!
Art glass seems to hold value pretty well !!

Here are some more

Can not tell anything from these pics !! Either they are way oversize or you stood too close !! Can you take some better pics please ?? I need to see the whole vase clearly !! One of the bottom too !!