|Medium sized stone with contrasting inset|
Contrast Stones can be recognized because they mostly look like other designs, except for the fact that there's a small contrasting "surprise" somewhere in the design... done in colors that stand in sharp contrast to the rest of what's going on.
In part, these designs are also inspired by the Japanese aesthetic concept of Wabi-Sabi, which can be loosely described as "beauty in imperfection."
A little bit of the inspiration also comes from a period in my 20's when I got quite interested in the beautiful and colorful geometric patterns of Amish quilts. One of the attributes of these was that these otherwise amazing designs often had a "deliberate mistake" sewn into the pattern as a reminder that seeking perfection is prideful, and scorned upon.