Editing Beginners Guide to Crafting (section)

== Polishing gems (sapphires) ==
Polishing gems will be one of the main ways to level crafting. You will polish many thousands of sapphires to level crafting so you can make high level items. To do this it is recommended to make your own water essences and harvest all items yourself. If you do so each polished will gain you 12.5gc for the harvestables you use to polish the sapphire and is a not so bad way of selling your harvestable for money and getting some experience also. 

Since polishing requires lot of food one way to do it is to polish 10 gems every time you visit the storage so most of the time you craft using mostly cheap food like fruits. By making sure you are full of cheap food when entering storage you can use the time it takes to leave storage to eat up since you spend all energy to polish sapphires. You might polish some of the other gems but sapphires is the ones who gets you the most money compares with the ingredients to mix it all. 

Sell off sapphires to the shop in Idaloran to get money to buy more gem sanders.