Kelley Knickerbocker is another mosaic superpower. Both a great artist and a great instructor, Kelley opened her studio, Rivenworks Mosaics in 2006 and creates fine art, commissions and public art as well as teaching the many techniques she has discovered and developed (because she's always exploring new ways to achieve the effects she is after.)
In her own work, Kelley plays with andamento and texture, and, as her prompt suggests we do this week, she pays just as much attention to the interstices (spaces between the tesserae) as to the tesserae themselves.
Those of you who struggle with the conceptual prompts will like this one as it's a bit more on the technical side. This is one of the ones I plan to hang on to and revisit - there are so many possibilities and one week is not enough time to explore them all.
Draw a quick, simple, single-line doodle - the "string" - and then think of as many different ways as you can to define the string with tesserae. If you can, keep a high contrast between your thinset and material values so that the "string" (in reality a vacant interstice) really stands out as lighter or darker than your materials.
Another way to get the "string" to really stand out is to make it twice as wide as the interstices between tesserae.
Tesserae shapes? Get creative! Notice in the sample that some tess lie along the contour of the "string", some are cut to span the "string", some are not cut at all but are simply set down whole on either side of the "string". Tess can be small, large, curved, rounded, tall, flat, one material, many materials, one color, many colors; no limitations! Have fun!