The mark consists of four symmetrical interlocked diamond shaped chain links organized in pairs directly above and below one another, with both the upper left link and lower right link being depicted as crossing over and then attaching under both the upper right link and lower left link. The links appear in different shades in different parts, with the outside half of all four links being the darkest, the inside half of both the upper right link and lower left link appearing in a lighter shade, the space enclosed by both the lower left link and upper right link appearing in an even lighter shade, and the inside half of both the upper left link and lower right link, as well as the space enclosed by both the upper left link and lower right link, appearing without any shading.