
Prince Rupert's drops (also known as Dutch or Batavian tears) are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole-shaped droplet with a long, thin tail. These droplets are characterized internally by very high residual stresses, which give rise to counter-intuitive properties, such as the ability to withstand a blow from a hammer or a bullet on the bulbous end without breaking, while exhibiting explosive disintegration if the tail end is even slightly damaged. In nature, similar structures are produced under certain conditions in volcanic lava.
Prince Rupert's drop
Craft > Curiosities > Naturalia > Prince Rupert's drop
A Prince Rupert's drop is a craftable Curiosity which can be used in the Study Report to earn Learning Points.
Quality
Prince Rupert's drop Quality is Average Ingredients and is softcapped by
The quality of the crucible and charcoal used do not affect the quality of the Prince Rupert's drop.
Vital statistics
Size 2 x 1
Skill(s) Required Hearth Magic
Object(s) Required Raw Glass, Water (0.5 L)
Produced By Crucible (lit)
Study details
Base LP 1800
Study Time 20
Mental Weight 9
EXP Cost 16