These Orthoceras Fossil crystal necklaces are very unique & special. Orthoceras is a fossilized squid that dates back to over 400 million years ago. These came from Morocco. I got them directly from the miner. The necklace chord is 18" of polyester with sterling silver lobster clasp attachments. Each of these necklaces have a matching sterling silver accented bail. Attaching the crystalized fossils to the bails are sterling silver jump rings. Beautiful opalized polished black Ammonite fossil. Ammonite fossils promote well-being, good health, prosperity, & good luck. The name Ammonite is derived from the shell’s appearance: it resembles a ram’s horn. Metaphysically, Ammonite is considered to be a protective stone giving stability & structure to a person’s life. What you put out into the universe & intend is what you shall receive. These would be a great gift for friends & loved ones. Dimensions: 18" silky soft polyester chord Pendants: Range From 2"-4" .5-1" Wide Across About .25" Thick Shipping is free with protected insurance. I price my crystal necklaces based on the weight of the stone, by price per gram, & how long it took me to put them together, as well as the price on the potency & quality of my minerals, & the amount of materials it took. I find my research from The Audubon Society Field Guide to North American Rocks & Minerals, A very deeply informational detailed book. If you have any questions, please ask. I am happy to help. Free Shipping, everything is insured , & higher priced items I do signature confirmations for safety & protection. Orthoceras, Crystal Necklace, Sterling Silver, Gift, Polyester, Simple, Unique, Crystallized Fossil, Pendant, Black, Kids