I have an issue with this pack: all the silverish ores look exactly the same unless you look at them really hard. For example, look at this pic:
The ores in that shot are quartz, ferrous, two tin ores (IC2 and TE), silver, and aluminum. Can you tell which is which? It would be great if you could make the ores look different in some way, so I can at least differentiate quartz ore (which I want) and aluminum (which I don't want) so if I am searching for a specific ore, I can spot it easily, without having to go up close to them and look for specific markings, I could just look at it at a glance and see if I want it or not.
Oh, and for the new enderpearl textures, I think it would be better as a plain diamond shape, without the corners on the sides.