I know I should've said this earlier, but I do appreciate the help on this. Thanks for trying to figure it out with me.

Canute: The difference between Semi-Transparent stuff & Dubs Skylights/Expanded Roofing is the first one is meant to affect stuff properties & making anything that uses affected stuff have a transparent look to them (be it vanilla/modded furniture, walls, weapons), while the other 2 are their own separate types of items that don't particularly rely on "stuffed" materials for visible transparency. I've pretty much done similar to those mentioned mods in having my own separate objects that rely on the resource to be built & have those transparent either through shaderType, or just making it look see-through via the WIP artworks themselves. What I would like is to be able to have a stuff resource be able to affect vanilla/stuffable objects visibly like Revolus managed to do. I just want to be able to find out exactly how he did it, which brings me to my next problem...
m1st4x: I would very much like to get in contact w/ the creator, but I do not have (and do not wish to make) a Steam account for reasons, and it appears the profile is set to private anyways, so I'm not sure how else to get in contact seeing as they haven't even been active since before 1.2 dropped.
Guess I'll put this part off for now... I was kind of also hoping to edit gemstone mods to have some translucency in their stuff properties, too, but I guess unless a miracle update to the mod happens or I figure out what's the right way to make it work whenever I have the patience to try something out XML-wise.
Thanks again for all the help!