Tourmaline has an unusual property:  when warmed or rubbed the gem becomes charged with static electricity. 
Compared
 with other gemstones, tourmaline is a relatively recent discovery;   it
 therefore lacks the rich lore that accompanies many other precious 
gems.   However, among some people, the stone is known as the “peace 
stone,” believed to dispel fear and make its wearer calm.
It supposedly promotes self-confidence, releases tension and enhances energy levels.
Friendship
 Balls were traditionally made by glass blowers at the end of their 
shift with left over glass,  given to family and friends to attract good
 luck and friendship:   they make a beautiful gift.
Hang in a window, on a tree, in the conservatory....anywhere it will catch the light to show off the glorious colours.
Suitable for inside and out.
Packaged in luxury presentation box, with hanging ribbon and gift tag.
Measurements
Diameter:  10 cm