Vtg Yellow Jasper or Petrified Wood Necklace

* Gold tone * I was told by my mom it's Yellow Jasper is a stone of protection and discernment. It provides inner strength and mental clarity * or it could be Petrified Wood, a posher was mentioning that it could be * Approx measurements: 12" / pendant 2 3/4"x 2"x 5/16" * Snake chain * Vintage from the 80s * Pre-owned, excellent condition NOTE: Color may vary due to light on comp/mobile NOTE: Found small mark on the bottom corner of the stone & backside, and the clasp has minor tarnish, see last pics NOTE: You can attach an extender to make it longer (not included) NOTE: I am not an expert on gemstones. Please take it to a professional jewelry to find out the stone.