The frames of the Petrus collection are made out of thin stone strata placed over a surgical stainless steel skeleton, granting remarkable flexility to the spectacles.
The stones, stemming from European quarries, keep their natural formation and irregularities adding a unique aspect to every single frame.
Every single spectacle is structured around high quality surgical stainless steel, covered with a thin layer of titanium. Special care is put into the origin and quality of the materials.
• 4 types of stone :
european slate, brazilian slate,
granite quartz, granite copper
• surgical stainless steel skeleton
• titanium nosepads
• 9 shapes in 4 colors