I recently made a custom block (not a normally shaped one) and I was wondering how I can make it transparent. It is a crystal ball, and is meant to be a decoration block. It appears clear in my hand but when I place it down, it appears black instead of clear (Its only supposed to be clear where I have no colour.) I heard something about overlaying textures whilst truing to figure it out. If that's what I need to do, I have no idea how to do it. And for any1 who helps, thanks a ton!
PS this