In Pet Simulator 99, diamonds play an essential role since with this currency, players can make the gameplay easier by buying various things, such as egg hatch multipliers or pet slots. Not everyone is willing to spend Robux to buy diamonds, so gamers are inclined to farm them for free. This guide explains how to farm diamonds fast in Pet Simulator 99. Luckily, several ways will help fans to collect this currency fast, and some of them will take only a few minutes.