Mohs hardness scale: 5.5–6.5
Were the ancient oracles always accurate? Nope. Time is fluid, Opal knows, making the prophecy business rather risky. But when the priestesses of Delphi donned Opals, their ability to make sense of the swirling waters of what-is-to-come sharpened. Unlike most stones, Opal knows how to hold and work with water. She feels the ways in which the waters of time can be channeled or dammed, creating different outcomes and new visions. Since the future is not a fixed destination, naming the pathways you might walk to get there begins to craft what comes next. Choose your road and name your path, Opal encourages. That’s how the future emerges out of the swirling waters of time.
Ritual 
We often hope or plan for the future, but the real magic comes from taking the time to use all of your senses to envision and embody your desires for what is to come.
Identify something you are wanting to move toward in your life. This could be in your career, your love life, or your home life. It might be a trip you plan to take or something you are creating in the world. Now spend a few minutes getting quiet. Instead of lists and ledgers, envision your future. See it in your mind’s eye. Walk yourself through a day of that future, noticing all the details.
Now overlay texture, scent, and sound onto this vision. Making it real to you is the first step in making it real in the world.
Reflection
Most opals are not actually crystals. Crystals have a regular arrangement of atoms, whereas the majority of opals are amorphous, having no regular internal system. Precious Opal is the exception. In this stone, flow has found a stable structure.
But Precious Opal remembers the freedom that comes from having no pattern. She knows that fluidity allows you to find your way out of the ruts of daily life so you can explore new ways of being, alternate futures, and new possibilities.
Do you let yourself break out of daily patterns?
How does it feel when you do?
A rhythm becomes a habit when we can no longer hear the music.
Sharon Weil, ChangeAbility: How Artists, Activists, and Awakeners Navigate Change