The first thing I noticed when I wore Mahogany Obsidian, was that it took about a week before i started to feel the benefits from it's energy. Mahogany Obsidian has a gentle and subtle vibration. if i had to describe the effects in one word, I would definitely say, "grounded." I felt grounded. Solid. Focused on what needed to be done and accomplished tasks with ease. I would say this gemstone is a must have for times when you need a little extra strength.