These are pretty, shimmery, silvery, white-blue kyanite hearts.
These blue kyanite stones have a quartz matrix and contain sillimanite, small bits of andalusite, and other mineral inclusions, which commonly occur with kyanite. Various shades of blue kyanite are extremely popular. Kyanite also (less often) comes in green, white, orange and black.
Blue kyanite is a stone that is highly associated with meditation, dreams, intuition, perception and communication. It is said to aid in dream recall, lucid dreaming, dream interpretation, nature, connections, expression, awareness expansion and deep insight development.
It is aligned with the throat and third eye chakras, the planets Mercury and Neptune, the zodiac signs of Pisces and Gemini and the elements of water and wind.
Interestingly enough, to many, the detailed formations of the stone visually represent the motion of water and wind working together in harmony.
This is especially a great stone for Cancers with an Aquarius rising, lovers of wind and water, and those with an affinity and attachment to the water orisha, Yemaya.