We found a box of antique glassware that my grandmother had bought. Along with a butter, creamer and sugar set was this vase. There are no markings on it that we can find. It is super heavy. Glass. Stands about 10 inches tall by 6.5' inches wide. Does anyone have any idea what this could be or where I could find out?
Glassware is very specific to brand/maker/details and usually takes very glass-knowledgeable people to identify it properly/correctly.
I can only suggest you post your question/pictures on the Reddit site and maybe their members can help you.
You will have to join first and follow the rules.
This site can sometimes be tricky to post correctly, but just ask for help and someone will probably be able to help you.
Ceramic vases often have markings on the bottom that can assist in identifying them and perhaps help determine their value. This is a page about identifying Chinese vases.