Hello, I would like to get an estimate of the current value of this necklace I purchased in 1985. I have no recollection of what I paid for it. I have a “Certificate of Authenticity” from the seller (Thundercraft Trading Co., 801 W. Limberlost Drive, Tucson, AZ), which says it is a Navajo necklace with Kingman mine turquoise. It is 18 inches long, and each pendant is 1 x 1 1/8 inches.
It has a stamp of two plain capital "M"s, but one of them is cut off. I tried to find the hallmark on a few identification sites, but did not see anything matching it. I’ve also looked for similar leaf designs – I wondered if anyone would recognize the style.
Thanks so much for your assistance!