This isn't one of those resource packs that turns Emeralds into Rubies, this is a little bit different.
this resource pack turns Copper into pretty Rubies.
Emeralds are beautiful, but swapping them for rubies can be annoying.
I've decided to turn something not-so-attractive into something more-or-less attractive.
(also you have to change the language to American English (en_us) ☆ to see changed names)
the affected items include lightning rods, raw copper, spyglasses and everything else related.

edit: added spyglasses. (also fixed the "spyglass_model.png" file being in the wrong folder.)