It's been a long absence from me, I am well aware. I'll be back to editing when the update comes out, but for now, here is a suggestion, regarding gems.
First of all, regarding the opal. Personally, I feel as though the opal could do with a retexture. I have designed a texture for the opal gem, and made it into an oval shape; that makes it a little more distinct, plus opals are usually polished into an oblong shape in real life, so it makes sense. Here is my texture:
Secondly, regarding the "gem blocks". I believe that the textures for these blocks are very 2 dimensional and lacking in the beauty that the gem items, plus their real-life counterparts, posses. Also, I feel as though gem piles would make for a better, and more realistic replacement. There was a suggestion on this before, which is where I am borrowing the following textures from:
Textures by myself:
Opal Treasure Pile:
Pearl Treasure Pile:
Topaz Treasure Pile:
The rest of the textures were done by High King Ithilion, in a comment on the following thread: http://lotrminecraftmod.wikia.com/wiki/Thread:371410
Amber Treasure Pile:
Amethyst Treasure Pile:
Diamond Treasure Pile:
Emerald Treasure Pile:
Ruby Treasure Pile:
Sapphire Treasure Pile:
So that's that! Comments and constructive criticism appreciated as per usual.