Those all sound like lovely options! I'd also love to see a close up of the oxidized clasp...there are a few on gem packed's site that I've been eyeing. On the tassel strand, have you thought about using two different stones? In other words, you could use black spinel along with amethysts for a nice accent. I would use a more green/yellow stone with the sapphire. You can also graduate the stones, smaller toward the top of the tassel, larger at the bottom of the strands. I also saw a really neat tassel that was asymmetrical...the gemstone"fringe" tapered from longer on one side to shorter on the other, which made a really cool cascade look.