The Big Dictionary of Dreams

by Martha Clarke
The ruby is the stone of felicity, of vital intensity, and of love. Therefore, dreaming of a ruby expresses the desire to experience a passionate adventure with intense love that will end in felicity.

Red like blood, this beautiful stone, when it appears in dreams, predicts happiness and unexpected gifts.

New American Dream Dictionary

by Joan Seaman - Tom Philbin
1. A good omen for intimate relationships and professional matters.

2. Desire, intense emotions, passion, perhaps obsession (note how deep the color is).

3. Precision, almost surgical accu­racy in emotional affairs or possibly actual surgery.

A Dictionary of Dream Symbols

by Eric Ackroyd
(1) Like anything red, a ruby may symbolize passion: love or anger.

(2) Like any other jewel, a ruby may be a symbol of your true sell. The context will usually tell you which of these meanings applies.