Did you know that emeralds are actually deep green beryl? I didn't until someone gave me an emerald necklace, which was absolutely stunning. I started doing some research after that.
Beryl comes in many colors other than emerald of course. Yellow, blue, turquoise, light green, aqua. There is also red beryl and pink beryl and since Beryl crystallizes in perfect hexagon shapes, it creates gorgeous gemstones. There was one discovered that was 30 feet in length!