let these grains sit for some time and see if they change in appearance . I let some of these grains sit took a picture then revisited the cloth later and threads were noticed especially red and white sometimes light blue. if you don't know already, I have strongyloides. 10 power magnify glass can see the threads on cloth , black cloth is the best to see the threads. I posted some of these pics on Image Gallery type in sharkman in search bar.. all my pictures were taken with an iPhone 5 approx 1 to 2 inches away and zoomed in where I still had a semi clear picture.