This is a marvelous Black wooden box with a metal Triquetra on top.
Triquetra means “triangle” or “three” (tri-) “cornered” (Quetrus). It is made using one continuous line to make three interconnecting vesica Pisces. The Vesica Pisces is the shape designed by the crossing of two consistent circles. A triquetra symbol is interlaced with a circle in many drawings.
It is an ancient Celtic symbol and is considered one of the oldest; dating back to as early as 500 BC. At that time, it symbolized the triple goddess (maiden-mother-crone). Over time it came to symbolize the Holy Trinity with the Christians in Ireland. This symbol is used to signify the 3 fundamental elements – air, water, and earth or the infinite cycle of life. It is a rune of protection.