January's gemstone is Garnet. Since those born in January can be Capricorn or Aquarius their astral stones are said to be Amethyst. However Garnet seems to be the commercially accepted gemstone for January.
This is a raw Garnet. Garnets actually come in a variety of colors including green, yellow, orange, black, and of course red. Garnet is said to stimulate creativity, passion, and physical energy. The word Garnet may come from pomum granatum, which means pomegranate in Latin.
They certainly can look like pomegranate seeds!