Tortoiseshell Tortoiseshell Tortoiseshell or tortoise shell is a material produced from the shells of the larger species of tortoise and turtle, mainly the hawksbill sea turtle, which is an endangered species largely because of its exploitation for the material. The large size, fine colour and unusual form of the hawksbill's scutes make it especially suitable. The distinctive patterning is referred to in names such as the tortoiseshell cat, several breeds of guinea pig, and the common names of several species of the butterfly genera "Nymphalis" and "Aglais", and some other uses. Tortoiseshell was widely used from ancient times in the West
Guitar pick to play stringed instruments for thousands of years. Feather quills were likely the first standardized plectra and became widely used until the late 19th century. At that point, the shift towards what became the superior plectrum material took place; the outer shell casing of an Atlantic hawksbill sea turtle, which would colloquially be referred to as tortoiseshell. Other alternatives had come and gone, but tortoiseshell provided the best combination of tonal sound and physical flexibility for plucking a taut string. Prior to the 1920s most guitar players used thumb and finger picks (used for the banjo or mandolin) when looking