RIBBON CORE

Ribbon Core Swirls are a type of Transparent Swirl with either one or two bands, or "ribbons," at the core. Those with one ribbon are called Single Ribbon Core Swirls and those with two are known as Double Ribbon Core Swirls; the latter are more common than the former, but both are more rare than most Latticinio, Solid Core, or Divided Core Swirls.

The bands in these marbles are usually wide but are sometimes narrow, especially in double ribbon cores, and may be thick or extremely thin. On the double ribbon varieties, there is usually color only on one side of each ribbon, while on the single ribbon examples both sides often have colors. Each side of the ribbon may be the same color scheme, or they may be different.

As with all swirls, ribbon cores may either be "naked" or have outer designs. The outer designs are typically comprised of sets of strands, though bands do occur, and most commonly mirror the ribbon or ribbons. The colors of both the ribbons and the outer strands or bands are much like those seen in other types of Transparent Swirls, though bright colors seem to be more common in these.