Coral Island Wiki

Black opal is a gem that can be obtained by processing geodes or mining in the cavern.

How to obtain[]

Black opal can be found by breaking yellow gem nodes and crates in the earth mine.

Once obtained, black opal can be placed in a slime of replication to be duplicated.

 Black opal × 1

Container availability[]

ContainerChanceAmount
 Earth geode3.23%1
 Mystery geode1.16%1
  • Geodes can be opened by processing at blacksmith for 20

Uses[]

Black opal can be donated once to the museum for 3 Museum museum points, can be used for enchanting points, can be shipped, or can be gifted as universally liked gift.

Offering[]

1 black opal will be needed for the rare gems altar

Gifting[]

Characters
 Loved
     Archie Chieftain
     Liked
      Neutral
         Pablo
         DislikedNo character dislikes this item.
         HatedNo character hates this item.

        Navigation[]