These beautiful earrings are made using real Zinnia which have been preserved using a silica sand and sealed with a UV resin to strengthen the flowers and adhere to bezel. 
While cured resin is a hard substance, use care as petals may break if too much pressure is applied or earrings are dropped from a significant height. 
Ear wires are 21 gauge gold-finished stainless steel, 20mm fishhook with 3mm ball and 4mm coil with open loop. Can be adjusted for comfort. 
Use care not to get wet. Although the finish is not meant to tarnish, use care when using creams and lotions as they may alter the finish. Wipe after each use.