Simply a soul sand glass mod. Adds two types of glass, Soul Sand Glass & Obsidian Soul Sand Glass. Both have pane variants, & can be dyed. Soul sand glass drops shards like quark (which aren't stained). They don't block light, although I'd add that feature if I knew how.
Glass:

Smelt it:

Recycle it:

Frame it:

(Obsidian variants have higher blast resistance & require iron tools to break)
Cut it:

Cut it harder:

Color it:


You're welcome to do anything with the mod, enjoy