Glass Item Frame

The Glass Item Frame is an item and entity added by Quark. It functions the same as an Item Frame. When it is empty, it look very similar to a glass plane. However, when an item is in it, the Glass Item Frame will become invisible, only showing the item. Like a normal item frame, it can be placed in the same block as another transparent, non-full block, as well as be crafted into a glowing variant.