Converting Pathfinder Adventures from 1e to 2e requires heavy loot alteration
The loot system in Pathfinder 2e is completely revised. For example, a common fairly low level mithral chain shirt costs a bit over 1000g in 1e.
The same item, low grade (don't even consider high grade for now) is a level 12 item worth over 1600g in a system where each gold is ...
RAW: DMG 133 says gemstones weight like coins, 50 to the pound.
Note that in real life 50 to the pound is only about 9 grams. That is a very small mass!
Real life tends to handle things differently for gold coins:
The 1 oz American Gold Eagle (diameter 32.7 mm) is composed of one troy ounce (approximately 31.1 grams) of gold. The silver and copper add ...