I am a player in a D&D 5e game with 4 other players and a Novice DM. We were 4th level characters at the time, hadn't been getting a lot of monetary reward for our dungeon crawling, and we've been beating up the undead for a side quest for a nice lich. We decided it's been long enough, so one of our Sorcerers cast Invisibility on our Way of the Shadow Monk, who then sneaked into a guard tower of a small town.
Looking around the big tower, the Monk found the armory, which doubled as a locker room of sorts, or maybe an evidence chamber. It had a whopping 20 locked chests, which contained in total 500 pounds of gems and a conveniently located Bag of Holding. Needless to say we looted them to hell and now we're stuck with all of these gems.
Now, according to our calculations using tools for older editions, the minimum value of this many gems was a bit over 4 million gp.
Is this right? Is there a tool or table or are there rules/guidelines for this? How much money are we packing right now?
The math we did used the information on this website. We do not know what quality or size or gp value the gems are themselves. Our calculations were absolute minimum, smallest size and lowest base value. They could all be diamonds or blood opals or polished jets or opals or whatever.
I'm looking for numbers here, in case I wasn't clear enough. I understand regular economy has rules and phenomena, but we can safely ignore those rules for now. Just assume they have a static value that we know, because that information is in the DMG treasure tables. You don't have to worry about how long it takes for us to fence off the gems, either.