Crystals

Crafting and care of crystals is the hardest and most advanced
operation an alchemist can take.  This ability requires, in addition
to Craft (Alchemy) and Knowledge (Arcane), Knowledge (Miasma and Myrr)
and Craft (Crystalcraft).  As it is such a taxing craft, very few
practice it.  However, all towns have at least one crystal crafter to
care for its crystal(s) year after year.

Crystalcraft is also used to create 'expansion' crystals, which can
grow over time.  With the help of farmers, this process can create new
settlements.  The only successful cases of this were Tipa and Tida, of
which Tida has since fallen into decay.

The DC for any crystalcraft check is over 20, and the Crystalcraft
skill may not exceed the lowest of Craft (Alchemy), Knowledge (Arcana)
or Knowledge (Miasma and Myrr).

The DC to recharge a crystal is 20 + crystal category x 5.