Merlinite is a trade name for Dendritic Agate or Opal. The black, fern-like inclusions/dendrites are formed from manganese oxides.
| Alternative Names | Dendritic Agate, Dendritic Opal |
| Colour | White, Black |
| Hardness | 7 |
| Crystal system | Trigonal |
| Streak | White |
| Lustre | Vitreous |
| Main Locations | New Mexico, USA |
| Chakra | Third Eye |
| Zodiac | Gemini |
| Numerology | Unknown |
| Planetary | Jupiter, Neptune |
| Element | Earth, Spirit |
