Designer Aleksander Gliwinski Amber Necklace. The Aleksandr Gliwinski butterscotch .925 sterling silver necklace is an exceptional jewelry item that has been crafted by the acclaimed Polish designer. Aleksander is a renowned jewelry artist from Poland, widely recognized for his exceptional work. The necklace is made of genuine butterscotch amber, sterling silver, and leather. The 22" long necklace has cherry amber stone on a clasp.