These beautiful black and pale white-pink wonders are diorite hearts.
Diorite is also known as "snowflake stone" in some crystal circles due to its white, flower-like formations. It is not to be confused with snowflake obsidian, which is a different stone.
Diorite is composed of gabbro and granite and has other minerals such as andesite, basalt, feldspar and more. This is a volcanic stone, produced in the volcanic arcs of Southwest Asia, and is quite local to various regions in that area, namely Pakistan and Afghanistan.
Diorite is also a porphyritic stone, which means that the pale pink and white inclusions are of different sizes and are distinct in the stone's volcanic matrix.
This stone symbolizes stability, tranquility, strong will, protection, relief, strength, calmness, personal calling, life paths, revelations, endurance, harmony, grace under pressure, steady prayer, balance, calmness and duality.
Furthermore, it's great for intentions of focusing, relieving heavy pressures and burdens, working through roadblocks and challenges and steadily sticking to plans and goals.
It is aligned with the heart chakra and root chakra, the astrological signs of Taurus, Libra, Capricorn and Virgo, the element of earth, and the moon.
These stones are especially wonderful additions to indoor miniature Zen gardens, prayer altars, and meditation areas. Anywhere where you do most of your relaxing, thinking, meditating, introspection and seek peace and restoration.