The Biggest And Best Vintage Navajo Amber Silver Ring-any Size! Adjustable ShankThis is an impressive vintage Navajo museum quality silver ring being one of the finest and largest Amber rings we have ever seen. What makes this piece unique is that the shank is adjustable. So simply just bend it to whatever your ring size is. This is incredibly smart. The beautiful Amber stone measures a mind blowing 1 1 2" X 1 3 8". The wonderful thing about Amber is that it is fossilized tree sap that is millions of years old. Check out the huge