Tincturing
This skill you can create potion. Material can buying from alchemist job change NPC
Potion that can make is various : HP, MP, Stamina or any buff potion (+Block,+Crit ATK,+Mag Amp)
Alchemist’s Tincturing Demonstration
All items currently available from the NPC shop. Note that not all of the herbs required to make potions are in there, so you have to buy them from other players, or hunt them yourself.
Tincturing is your second money making skill. You unlock new potion recipes upon leveling up the skill or via attributes from the Alchemist Master. The potion level you create depends on the level of the skill, and in some cases, the level of the attribute as well.
Gem Roasting
First up is Gem Roasting, which is likely going to be one of your two money making skills. Pressing the skill button opens up this shop interface where you can enter the shop’s name, and the price for your Gem Roasting service. You need 1 Calcite every time you roast a gem, so stock up on those when you afk with the shop open. Calcite is bought from the Alchemist Master for 3k each. You have to open up this shop to roast your own gems, and of course, you do not need to pay any silver yourself (except the 3k from the Calcites you bought).Once open up shop other player can use your gem roasting service.Shop will stay open even after you log out.
Anyone who want to open up shop should get this skill.
And this is what the interface looks like when you open it. Your customers will also see this same interface with the exception of how many Calcite you have left and the Record tab. The Record tab shows who bought your service and it also has the Close button when you want to close the shop. Currently, lv 5 Gem Roasting is powerful enough to reduce a Lv 4 gem’s stat penalty to 0.
Magnum Opus
Apparently, you can put any items inside, so guessing is not an option. If you fail, nothing happens and you just get a “incorrect combination” message.
Thanks to Kiyoshiro and Tsuyucchi
Source: http://kiyoshiro-ritsu.tumblr.com/post/127297840924/tree-of-savior-3rd-cbt-review-day-11-22
Source : All about Alchemist Crafting Skill Information