Obsidian dream meaning is explained below using 1 different source. Each interpretation is shown with its source.
Interpretation 1 — Ariadne Green
This black volcanic stone assists you in penetrating the deep layers of the subconscious in order to excavate and reflect on the shadow forces. It can assist you in grounding your physical body. In that it is volcanic glass, obsidian generates inner power.
Source: Ariadne's Book of Dream • Author: Ariadne Green