Hot air balloon earring ... ( 10 inch) 24 gauge ( wire diameter 0.5mm ) : 30cm( 12 inch) spherical stone 14mm ... I do not know exactly what type it was, can be normal copper wire, it have plating ...

During a hot stone massage, smooth, flat, heated stones are placed on specific parts of your body. The stones are usually made of basalt, a type of volcanic rock that retains heat.