What's not to love about these natural rock crystal beads. On a 16" strand, these tumbled and polished nugget beads average 22 x 14mm. No two beads, or strands are exactly alike. Some of these rock crystal nugget beads will have visible inclusions that look like cracks but are actually deep within. This is perfectly natural for this stone, in this size. 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?