This is a seven spiral pendant. The pendant is just under 1.5 inches in diameter and it is made from gold-plated stainless steel.
More About The Seven Spiral Pendant
Ancient Celts used the Celtic spiral on tombs. Because the spiral appears on tombs and other ancient ruins from early Celtic times, many believe it was a spiritual symbol for them.
Commonly, three spirals appear together in a Triskele or Triskelion symbol. In that context, the three spirals together represent a triad, such as mind, body and spirit. This one contains seven spirals. The number seven is very important in the Bible. The number seven also is important in Alchemy, and ancient astronomy. To learn more about the number seven in those contexts, read this post about the Septagram.