Merlinite is a trade name for Dendritic Agate or Opal. The black, fern-like inclusions/dendrites are formed from manganese oxides.

Dendritic Opal, also known as Merlinite, is believed to balance both light and dark energies and can help you delve deeper into shadow work. It is believed to aid in spiritual growth and balance both male and female energies. It is also thought to be useful in shamanic journeying, allowing one to connect with the spirit world.