emerald_gem.xml

<items>
  <item>
    <key>emerald_gem</key>
    <name>Emerald Gem</name>
    <description>
      A shiny precious gem, and it's all yours!
    </description>
    <type>loot</type>
    <icon>item2_47</icon>
    <sortKey>_loot14</sortKey>
    <weight>0.01</weight>
    <priceDetails>
      <buy>80</buy>
      <sell>40</sell>
      <canTrade>true</canTrade>
    </priceDetails>
  </item>
</items>