gem_refraction.xml

<abilities>
  <ability>
    <name>Gem Refraction</name>
    <key>gem_refraction</key>
    <skill>knowledge</skill>
    <icon>knowledge_10</icon>
    <description>
      +1 maximum health for each Ruby Gem in your inventory.
      [n]+1 maximum energy for each Emerald Gem in your inventory.
    </description>
    <type>passive</type>
    <subType>dark_arts</subType>
    <passiveInfo>
      <modifiers>
        <modifiers>
          <type>MaximumHealth</type>
          <amount>1.0</amount>
          <multiplierItem>ruby_gem</multiplierItem>
        </modifiers>
        <modifiers>
          <type>MaxEnergy</type>
          <amount>1.0</amount>
          <multiplierItem>emerald_gem</multiplierItem>
        </modifiers>
      </modifiers>
    </passiveInfo>
    <unlockInfo>
      <autoUnlock>-1</autoUnlock>
      <autoDiscover>-1</autoDiscover>
      <unlockRequirements>
        <worldlorePoints>0</worldlorePoints>
        <mysticismPoints>6</mysticismPoints>
        <philosophyPoints>0</philosophyPoints>
      </unlockRequirements>
    </unlockInfo>
  </ability>
</abilities>