If a stud—"What is this for?"
The words italicised should be pronounced with emphasis, as they will give the clue needed; certain articles cannot be so well indicated in the questions, and greater care must therefore be taken in committing the corresponding questions and answers to memory.
Suppose, further, that a brooch has been held up, and that it has to be more fully described, proceed by telling the audience that the blindfolded clairvoyant will say of what metal the brooch is made.
If of gold—Question to put—"If of gold or silver?"
If of silver—"If of silver or gold?"
If neither gold nor silver, but a common imitation—"Of what metal is this brooch made?"
If set with stones—"Is it set with a stone or stones?"
If unset—"How is it set?"
If with a topaz—"Tell the name of the stone."