Celtic Triquetra: This particular symbol comes in the form of a triangular Celtic knot and is said to be a representation of the spiritual, the mental, and the physical which are known as the three planes of human existence. It might interest you to know that although the three points are separate, yet they are interlocked. This goes further to symbolize the connection existing between the mentioned three planes.
Irish Cultural Artifacts - From aran sweaters to claddagh rings, many of the patterns and designs used in traditional Irish clothing and jewelry have hidden symbolism and can be traced to intriguing Irish stories and legends. Image Credit: http://www.murphyofireland.com/wp-content/uploads/2014/10/Murphy-of-Ireland-Infographic.jpg