Gabbro refers to a group of coarse-grained igneous rock made mainly of Quartz and Feldspar, and Indigo Gabbro is a special form that has a certain colouration. Indigo Gabbro is also known by the trade name Mystic Merlinite (not to be confused with Merlinite, which is a trade name for Dendritic Opal), and this variety of Gabbro can be found in Madagascar and Alaska.
| Alternative Names | Mystic Merlinite |
| Colour | Black, Purple |
| Hardness | 0 |
| Crystal system | N/A |
| Streak | N/A |
| Lustre | N/A |
| Main Locations | Madagascar, Alaska |
| Chakra | Root |
| Zodiac | Sagittarius |
| Numerology | 6 |
| Planetary | Neptune |
| Element | Fire, Earth |
