Blue crystals are also called blue wish fulfilling crystals. People use blue crystals to make a wish and it helps to let wish come true.

For healing energy, Blue crystals are used to gather energy in order to concentrate on study/work.

In feng shui, Blue crystals are used to prevent hurt from the flying star Number Seven which causes accidental financial losses, such as theft, robbery or fraud.

Two Size:
#60: approx. 2 3/8" x 2 3/8" x 1 1/4"
#80: approx. 3" x 3" x 1 3/4"