Really crude, it looks like on the inside of the band under the turquoise. One of the reasons I'm comfortable that this is ingot are the irregularities and pits left when the silver was heated and poured.
Please look at the magnified photos to see the surface scratches and wear. 5 5/8" inside circumference with a 1 3/4" gap, just about 3/4 wide. The item "Early Navajo ingot silver bracelet, crude, natural turquoise, great" is in sale since Saturday, May 16, 2020. This item is in the category "Collectibles\Cultures & Ethnicities\Native American\ US\1800-1934\Jewelry". The seller is "greatthingsnm" and is located in Albuquerque, New Mexico.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Costa rica, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay.