Appreciate the insight!There are so many silversmiths working with that name... I have only followed the work of Kenneth Begay (1913-1977) and his long history with the White Hogan in Scottsdale. His hallmark is a distinctive KB set into an incised square. His son, Harvey Begay (1939-2009) used a similar design with his initials HB. Looks like a handsome polished Cerillos turquoise cabochon, maybe 1970+? Just a guess. I'll take a look through books at home to see if the hallmark is identifiable.