well sand is made of glass so i wouldnt advise eating it....
or rather, glass is made from sand. Hehe!
Yes it's true, I sudddenly woke up early hours this morning really craving sand. My OH didn't take me seriously!! I have lately been watching desert nature programs thinking the sand looks yummy. When i was pregnant with my daughter i ate plant soil and thought that was yummy.
I was thinking of going to ikea, homebase or even asda to get some today, i can't get it out of my mind!!!