What's not to love about these natural rock crystal beads. On a 16" strand, these gemstones chips are graduated from 5 to 12mm on average. No two strands are exactly alike in size. Rock crystal often has other mineral within and these beauties have just the slightest hint of green. Rock crystal is said to protect the wearer from bad dreams. Placed under your pillow, rock crystal can be used to treat insomnia. Don't you think its time to get some of these gemstone wonders for yourself?