Opal is known for opalescence — a shifting play of color that seems to move beneath the surface of the stone as it catches the light. No two opals show quite the same pattern of color.
What Is Opal?
Unlike quartz-based stones, opal is a hydrated form of silica without a crystalline structure. Its color play comes from microscopic spheres arranged within the stone, which bend and scatter light. Opal ranges from milky white varieties to darker, more dramatic ones, each showing its color flashes differently.
The Traditional Meaning of Opal
Opal’s shifting colors have traditionally linked it to creativity, inspiration, and imagination across several cultures. Its ever-changing appearance has made it a natural symbol for change and possibility.
These associations are rooted in tradition and personal meaning, not scientific claims — chosen for their story and their beauty, not as a promise of effect.
How to Choose Opal Jewelry
Tilt a piece under different light before choosing — opal’s color play can shift dramatically depending on the angle and light source. A well-set opal in a protective setting, such as a bezel, helps guard the stone’s edges from everyday knocks.
Caring for Opal
Opal is softer and more delicate than many gemstones. Avoid extreme temperature changes, prolonged dryness, and harsh chemicals, and store it away from harder stones that could scratch its surface.
Opal Pieces at MysticLith
Explore more in our Earrings category.
What causes opal’s play of color?
Opalescence comes from microscopic silica spheres inside the stone that bend and scatter light as it moves.
Is opal a crystal like quartz?
No. Opal has no crystalline structure — it’s a hydrated form of silica, which is part of why it behaves differently from stones like quartz or amethyst.
Does opal need special care?
Yes, more than many stones. Avoid extreme temperature changes and harsh chemicals, and store it separately from harder gemstones.