Crystals to enhance intuition are usually connected to the Third Eye and Crown chakras, which are our Spiritual centres and are often Indigo, Violet and White/Clear. Some of the best crystals to enhance your intuition are:

Azurite is a stone of intuition, spiritual vision and powerful activator of the third eye, enhancing access to our own source of inner wisdom and insight. Labradorite helps to integrate our intellect and intuition, promoting spiritual vision and insights, enhancing psychic ability and clearing & shielding the aura. Sodalite activates instinctual based intuition as well as spiritual intuition, and helps us to accurately interpret information you receive. Iolite activates the third eye chakra to enhance your inner vision and intuitive insight, as well as spiritual communication. Moonstone has strong abilities to enhance your intuition and insight, as well as intuitive dreaming.

Trust your own intuitive feeling as to which crystal is the appropriate one for you!