These rhodochrosite earings are handcrafted from 14K/20 gold filled wire and rhodochrosite cabochons. 14K/20 gold filled wire is basically a tube of 14K gold with a jeweler’s wire down the center for flexibility. It wears well, does not tarnish, and has the same allergy reactions (or non-reactions) as 14K gold. Each of my cabochon earrings are "one-of-a-kind" and you are selecting the actual one you will be receiving. approximately 3/4" x 2 5/8" 20mm x 66mm (each earring, including the chain and finding) The earrings currently have lever back findings. They can be changed to hooks, posts, or clips if you prefer. I can also shorten or remove the chain.