Hmmm 
I imagine not chips but smaller pieces within the jar? If it was a jewelry purchase, it may have something to do with the name of the item or shop for the description & be pieces of clear quartz too.
If it’s a local merchant you can visit or a shop you can email 
Maybe send them a friendly thank you inquiring about what type is in the jar 
or if they have any other information about them.
It could be a token of their appreciation & small pieces of ~Clear Quartz~:gem: within the jar which can be used for a multitude of reasons 