Stewart is the younger brother of Steven Yellowhorse, another well-known Navajo jeweler.His brother Steve has been a great influence in his life and especially with jewelry making. Stewart really looks up to Steve as a role model. Stewart is half Navajo with some Irish and French.
Stewart does great inlay work and always uses the finest natural stones. He is best known for his intricately inlaid knives including Buck Knives and Case Knives.
His use of the beautiful Castle Dome turquoise in pendants and bracelets are exquisite, and the turquoise is becoming rarer and more difficult to find.
Stewart is very devoted to his family. He has three sons and four grandchildren.