how much is uncut amethyst worth?

my brother has a medium sized uncut amethyst geode and he wants to know the price of it..
its about 12 lbs and it is mostly dark purple..
it does have a couple of scratches but their not really noticeble, unless you put it a couple inches from your face..
idk how much karrots are in it and neither does my brother..
if he were to get it appraised, what would the price be on it?

The geode is worth far more as a display item. Amethyst can be had for under 10 cents a carat–cut!.

Search eBay under Collectibles Rocks, Fossils and Meteorites or gemstone display categories for typical prices.

Unless he wants to $20-30 pay for an appraisal for a specimen which could be worth $20-40.

12 lb, lbs = 5 443.108 44 gram There are 5 carats per gram
not deducting for dregs your specimen weighs 27,215 carats Again this value is nothing more than a curiosity,