Native American Indian Jewelry How to identify Authentic Antique Navajo Bracelets from 1870 1900

Measures 1/2 in front tapers to 3/8 in back and is 2 3/8 from inside wall to inside wall with ruler or 5 3/8 + 1 gap = 6 3/8. Vintage maisels native american indian fred harvey era turquoise silver bracelet by the m on inside is a slight shallow stress line that does not affect anything.