Unusual Tarnished Metal Leaf Necklace Fashion Jewelry Patina Lobster claw clasp

Unusual Tarnished Metal Leaf Necklace Size: 11" from top of clasp to bottom of leaf (see photo) Color: Grays and greens Almost looks like camoflauge. It has a very pretty patina look to it, almost distressed. Looks handcut into a leaf shape. Unfortunately, I have no idea was kind of metal it is and I can't remember where I purchased it from. I love un-perfect things and it's tarnished look is what drew me to it. I'm trying to simplify my home, so things that I haven't used/worn in a long time, I'm hoping to find a new home for. Smoke free and pet-friendly home. I try to be as upfront as I can…but I’m sure I make a mistake here or there. Please feel free to ask questions. Thanks.