The listing, Stunning Hematite Spike Collar Choker Necklace with Gold Tone Bead Accents has ended.
I won this from a fellow Listian, and sadly it does not fit my fat neck! Actually it does fit, but my thyroid glad swells and is annoyed by anything touching it, so back to the listia world it goes. :-)
The previous seller didn't know much about it, but I've been able to figure out it is hematite and has a Navajo design. It isn't signed that I see.
There is one tiny chip on the back of one of the spikes, but other that that it is in perfect condition!
From end to end is 18 inches.
Original auction http://www.listia.com/auction/1660209