thanks for all the tips
for speed I tried 3 rifts on normal but they never dropped greater rift keys. 2 dropped something purple that I wasn't able to pick up. So I'll be going to up my difficulty again,
Yeah I still have over 450 bounties, most the hardcore playthrough, 5 characters to 70, though that hardcore is up to 14, and 60 or so Treasure goblins, though I'm seeing several in some rifts so I have a long way to go. I'll proubably do 25 bounties a day as well as some rifts to get that gem of ease, then level it, plus slowly progress my hardcore chacter. At least I'm enjoying it. I've put more time and effort into worse games.
Like Neo said, the purple items are Blood Shards. Their sole purpose is to be traded with Kadala, if you've played Diablo II, it's a bit like gambling in that game, only this time you're not spending money.
I don't know what your gear looks like but let's say you've got 3 pieces of a set and you're missing the boots, you can use Kadala to try and score those boots. Just keep clicking for boots until you get what you want. The same applies with any piece of equipment you're trying to score.
Answering these questions is fun, I should make and Diablo III Q&A topic