Borostones Holiday Gift & Decoration
All pieces of art are kiln / oven annealed to remove most of the stress that occurs within the glass as it is worked in the flame. This involves maintaining the heat of the piece after is has been worked to a high enough level to allow the small stress fractures to come together and then heating the piece to the annealing temperature and letting it cool slowly in stages. The resulting pendant is very strong and usually will not break when dropped. It is glass, however, and therefore not unbreakable.
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in section "Articles made of glass"
View also products categories "Mirrors and glass products"