How Does An Expert Tell A Diamond From A Piece Of Glass?

[sandyRoe]

Say it was a diamond without flaws.

[Buenchico]

http://www.wikihow.com/Tell-if-a-Diamond-is-Real

[Peter Pedant]

oh good thanks Chris

[jim360]

You could try hitting it with a hammer...

[sandyRoe]

The glass imitation would shatter into a thousand pieces while the precious gem would remain intact?

[jim360]

Well you'd certainly hope so!

[sandyRoe]

This brings to mine the medieval test for witchcraft. A suspect was dunked into water. If they drowned they were innocent but if survived they were clearly witches.

[Old_Geezer]

Stop Press.
Innocent glass gets shattered.