Perhaps it would look good as a necklace but I wouldn't do that in its present shape, it's too sharp and pointy. I would dull the point and abrade the edge first. No it went on an arrow, part of a set I'm making for our chief.
As a side note. A archeologist recently found a site near me and after some cleaning and digging he found a vein of Quartz that you can plainly see had been worked on for tools but the abos of that region. I plan on going to have a look see and try and get permission from their chief to take samples back with me.