The January Blossom Birthstone, a wonderfully colored garnet measuring 5 mm in diameter and 19.88 MM in approximate width, is set in a flower-shaped setting made of yellow gold plating and comes with an 18-inch yellow gold chain that can be extended by 6 inches. Every month of the year receives a gemstone as its birthstone. The birthstone has a long history dating back thousands of years, and it is believed to have protective magical properties. With each stone placed by hand, the blossom birthstone necklace is an exquisite piece of jewelry.