DOES IT MEAN ANYTING WHEN A CRYSTAL BREAK?
The answer isn't as straightforward as a simple yes or no. Sometimes, breakage and cracks may simply be caused by a physical/environmental impact (like accidentally hitting it on a hard surface, dropping it on the floor, or unintentional exposure to extreme change in temperature).
However, when a crystal breaks completely on its own, it could mean that the gemstone has encountered a strong vibrational frequency/energy of a high amplitude. Crystals are highly programmable and have an inherent ability to store vibrations; it is possible that they become overwhelmed and saturated with that intense energy - and shatter.
WHAT TO DO WITH A BROKEN CRYSTAL
So what should you do when that happens? It’s always unfortunate when a gemstone breaks, especially one that you connected with. But in that moment, allow yourself to feel gratitude. Say a little thanks - perhaps your crystal protected you from that intense energy and absorbed it instead, therefore serving its purpose. You can always keep it as a memento (but make sure to cleanse it first!) or bury it in soil and return it back to the Earth.