The Endless Knot - is one of the symbols in Buddhism. It consists of intertwined lines with angels, overlapping each other. There's no beginning and no end of the lines which reflects internal continuity of mind, or the endless cycle of birth, death and re-birth (like Samsara), or the wisdom of Buddha, according to different interpretations. 

The way how the lines overlap and are close to each other reflects a closed cycle of cause and effect. 

The Endless Knot represents connection of everything is universe, destiny or karma. 

“The Endless Knot” ring with natural Turquoise in our collection has this symbol on the sides.