Vintage 925 green amber earrings native American navajo signed estate sterling

Beautiful from an estate, 70's signed 925 then has a designers stamp also, these were from an estate that I bought alot of turquoise native navajo jewelry from, they had different native pieces as well, some signed some unsigned, these were said to be native I can't be 100% on that I'm going off what I was told, native American from navajo arts. These are not as aged as my others, or they possibly were polished, my others from them from the 70's were aged patina dark sterling silver. These are more bright. The green amber or earth amber is beautiful sparkly , some call it aurora borealis amber bc it resembles the northern lights, this amber looks like a bright burst of earth! Just Beautiful, close up one of the Amber's looks like it has a smudge, might come off, you have to REALLY REALLY look close or see photos, to notice it. It's not really anything to worry over but wanted to be upfront and mention it. These both look beautiful. measures- 1.25" long see my other amber pieces, necklace, brooch, ring, earrings, bracelet, pendant and more. See last photo of these with a few other pieces. box 23 I sell in my closet and have tons of other brands similar to list such as weiss, Stanley Hagler, Alice caviness, Demario, Navajo, James Avery, miriam haskell, Jomaz, hattie Carnegie, juliana, Lee sands, Barse, native American, coro, vior,Donald stannard, lisner, renoir, Eisenberg, Christian dior,Givenchy, ciner, carolee's, hobe, Ben amun, Tiffany and co, Vendome, Alexis bit