Tagua 950 is the workshop of Fernando Espinel located in Montañita, Ecuador. His pieces are made of Tagua, a nut that is sustainably harvested from trees as well as other materials. This pair is made of recycled t-shirts that the workshops sells along with a mixed metal.
The metal on this pair of earrings is called "German Silver" because that is where it is mixed. It is made up of bronze, copper, zinc and tin. These earrings are not hypoallergenic.