The name of Batavian or Dutch tears have been around for more than 400 years!!
Prince Rupert from Germany brought these beautiful tadpole looking glass drops to England’s King Charles II and had him intrigued by the unusual properties.

Test were given to break the glass drop, it could withstand hard knocks from hammers, shatter a bullet, and even a hydraulic press couldn’t shatter it!
https://www.popularmechanics.com/science/a40008994/why-the-prince-ruperts-drop-is-so-strong/

However, if you would lightly bend and break the tail of this tadpole looking glass drop, the whole glass would shattered into powder with a little pop noise.

Watch this interesting youtube clip by Purdue university to be intrigued by this 400 year old mystery, “Prince Rupert’s Drops”.

Inspired to be a scientist?
Read more at this site: https://royalsocietypublishing.org/doi/10.1098/rsnr.1986.0001