Trinity Knot Worry Stone: This river stone is engraved with a Trinity design. The Trinity knot design first appears in the historical record around 400 AD when Coptic missionaries traveled to Ireland and proceeded to produce the highly esteemed Illuminated manuscripts. It symbolizes the threefold Godhead - the three points represent Father, Son, and Holy Ghost, and the interwoven circle depicts the unity between the three. Because we are using natural river stones shape and color may vary slightly from what is pictured. Because we create these stones with laser engraving, depending on the kind of stone engraved, the engraving can appear lighter or darker than the stone itself and the engraved part can sometimes have a glassy texture. Approximate Dimensions: 1.5 - 2 inches