Waited so Long! Faceted Glass Briolette Necklace with 6/0 seed beads

I bought these beads a few years ago for pennies on the dollar.  It was one of those awesome sales I can't resist even though I really try to follow this advice to prevent overspending:

Buy ONLY what you need for the project at hand.

Sometimes you just have to jump on a good deal, though.  As I was goofing around with a cool Pinterest crochet lace tutorial, I tried these amethyst colored glass briolettes and realized they might not be best for the project.

BUT, and this is where craft fails turn into craft successes, I loved the way they looked with alternating pairs of 6/0 seed beads.  I loved that the necklace reminded me of the classic Swarovski collar necklaces from the 1950's.

It's simple and repetitive, but elegant, I think.

The only problem with waiting so long to use them is that I don't know whether these are crystal or just plain glass.  I'm guessing glass.  Either way, the faceting adds a bit of sparkle in the light.