It is unmarked and unsigned. Tested and turquoise is real. I believe it is silver on copper or some sort of silver-plated.
Very unique and rare piece. It is an antique piece, late 60's-early 70's. I have a matching cuff bracelet in another listing. Let me know if you are interested in both. See pictures; as they show more details.The item "Vintage Navajo Silver Metal Leaves Turquoise Squash Blossom Necklace Handmade" is in sale since Monday, August 3, 2020. This item is in the category "Jewelry & Watches\Ethnic, Regional & Tribal\Native American\Necklaces & Pendants". The seller is "e_squared_emporium" and is located in Brentwood, Tennessee. This item can be shipped worldwide.