Teddy started making jewelry in 1971, and seems to be fond of using shadow boxes in his jewelry. I’ve noticed that the stones he uses tend to be of high grade, and his finished pieces seem to retail for a good amount. The stones look like Kingman with pyrite to me. If this piece were unsigned, i would have it priced around $185. But because it’s a Teddy I would say $250-ish seems right. Here’s and identical Onyx necklace that already sold on eBay.
Perry Null also did an interview with Teddy If you’re interested: