Estate Vintage Antique Fire Agate order necklace

Product Name: Estate Vintage Antique Fire Agate order necklace
This is another estate item , that gramps actually had priced & info on it . The paperwork said “ Rare Pin Fire Agate on GF chain . I am thankful this beautiful stone was actually inventoried, as I know absolutely nothing about much of the items passed on to me . My Grandparents owned an antique store in downtown Seattle for several decades , and have been gone a long time . I am the last in the family , and just in the last year have started going through things … To me the chain appears more newer although I don't know when what year GF chains began . My order mother may have put the chain on the pendant I really don't know . It's about 15 in long and the pendant is appr 3/4 of an inch in length & appr 1/2 in at the widest part …I had never even known about agates until now at 60 years old lol. Pretty amazing stone for sure . Pictures really don't do it any justice..Please look at all photos as they are part of the description.