Vintage Juan Singer Navajo sterling peyotebird pendant. Weighs 11.1 grams Measures 1.75” x 1.875 A Native American jewelry piece referred to as “silver” or “ingot” is guaranteed to be at least 90% silver. I rarely use the word “sterling” when referring to older Native American silver or really any older silver jewelry as silver contents vary and “sterling” is 92.5% silver. No older jewelry is going to be exactly 92.5% silver, some a little over, some a little under. It wasn‘t an exact thing with handmade jewelry.