User blog comment:TravelAddict1967/Cersei's wine glasses at King's Landing/@comment-192.0.138.91-20130603030249

This is the glass. It's not bohemian, it's waldglas. Once I stumbled on the glass type, I was able to find a glass blower and here it is:  http://www.forest-glass.co.uk/index.php?option=com_content&view=article&id=79:j31-qkingsq-glass&catid=36:wineglasses&Itemid=61

Don't know if it's in production still.