Metal is the material of the first eyeglasses.
Alloys or pure metals, nickel silver, stainless steel, titanium, silver or solid gold; all have their own characteristics, but they are best known for their lightness and understated elegance.
Buffalo Horn (n.)
Noble and natural material composed of 100% keratin.
Used both in eyewear and for other everyday objects, its main qualities are its unique colors and the fact that it is hypoallergenic.