LNC - Large Quartz, horizontal view

In my college's science building is a small collection on display with very fascinating objects. I've searched online about it, but I haven't seen any reference to this collection at all. Last time I checked, the cases were empty, so I'm not sure when I can go back to retake these photos using my CPL filter and tripod, if I ever get around to going back at all.

In this photo is a large piece of quartz.