Your search for "buckle" revealed the following
Royston Turquoise Apple Watch Band (38mm)
Royston Turquoise
Royston Turquoise Apple Watch Band (38mm)
Pictured on 42mm Apple Watch Leather Band
Kingman Turquoise Apple Watch Band (42mm)
Sterling Silver
Bull Skull Necklace (16”)
16” with 2” extension (18” total) Silver Kingman Turquoise