DREAMS

     Certain crystals induce dreams, and if you see crystals in your dreams, they are trying to speak to you.  They may be foretelling the future, offering advice, or warning you about the present. 
Crystals such as Dioptase, Emerald, Jade, Ruby, and Moldavite are "stones of inspiration" that generate vivid dreams: pink Moonstone stimulates lucid dreaming.  If you slip a Rose Quartz crystal under your pillow, you will dream of your true love.  Amethyst or Smoky Quartz protects you against nightmares, while Malachite brings hidden emotions to the surface.  Light shining through a crystal in your dreams foretells a speedy resolution to a problem.  Hidden jewels guarded by a serpent reveal spiritual treasure in you unconscious mind.

Crystal Dream Meanings

Diamonds - If you own them in life, slight losses.  If not, a small profit.
Jade - Prosperity.
Emerald - Good news.
Amethyst - Peace of mind through unexpected good news.
Opal - Great possessions.
Aquamarine - A happy love life.
Ruby - A passionate affair.
Bloodstone - An unhappy love affair.
Polished Agate - Do not be drawn into arguments between friends.
Jet - Sad news.
Quartz - Beware being cheated by someone you trust.
Lapis Lazuli - Happy adjustment to circumstances.
Onyx - You need advice on an important decision you are delaying.

Crystal User's Handbook by Judy Hall