Crystal Defects

[@kowshikbhanu448]

this guy is responsible for A grades on my report card

[@pran0808]

An awesome explanation . Just brilliant

[@charlietoes]

Who else is watching this video without socks on?

[@Guillen41495]

same

[@MrArnoldo1999]

RIP Kobe

[@cesarvillanueva9767]

Arnoldo Garcia x2

[@javedbijalikhan210]

very nicely explained thank you

[@sophiaxmadison]

Thank you!

[@joswayreyes9665]

This is dank

[@Dark-Cthulhu9]

who is watching this in 2019?

[@hectorsaldana1726]

watching this in 2020

[@yangdiao-d5b]

I‘m watching this in 2024

[@deepakdmanjila9969]

Thank you sir...