Pele's tears
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Pele's tears are small pieces of solidified lava drops formed when airborne particles of molten material fuse into tearlike drops of volcanic glass. Pele's tears are jet black in color and are often f
Assorted shapes of Pele's tears from Mauna Ulu. U.S. dime for scale in lower right.
Pele's tears
Prince Rupert's drop
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Prince Rupert's drops are toughened glass beads created by dripping molten glass into cold water, which causes the glass to solidify into a tadpole-shaped droplet with a long, thin tail. These droplet
Pele's tears
…Pele's hair Prince Rupert's drop USGS Photo Glossary: Pele's tears…
Prince Rupert's drops
Depiction of glass drops from Robert Hooke's Micrographia (1665)