These are generally lampworked glass beads in iridescent metallic shades in two tones (the bead will seem to be that of two shades when checked out from distinctive directions). Precious stones are unusual and costly gems like diamonds, rubies etc. Semi cherished stones usually are not as pricey or uncommon https://crossbookmark.com/story18277536/5-tips-about-yellow-beads-types-you-can-use-today