Understanding Why Opals Need Special Care
Opals are unlike most other gemstones. They contain water — typically between 3% and 21% by weight — and this water content is part of what creates their legendary play-of-color. It's also what makes them vulnerable. Rapid changes in temperature, prolonged exposure to dry air, harsh chemicals, and physical impact can all cause an opal to crack, craze, or lose its brilliance. With the right habits, however, an opal can remain beautiful for a lifetime.
Cleaning Your Opals
What to Use
- A soft, lint-free cloth for routine wiping
- Lukewarm (not hot) water
- A very mild, unscented dish soap (used sparingly)
- A soft-bristled toothbrush for settings
The Cleaning Process
- Dampen a soft cloth with lukewarm water.
- Add the tiniest amount of mild soap if needed.
- Gently wipe the opal surface — never scrub.
- Rinse with clean lukewarm water.
- Pat dry immediately with a soft cloth and allow to air dry fully before storing.
What to Absolutely Avoid
- Ultrasonic cleaners: The vibrations can cause internal fractures.
- Steam cleaners: Extreme heat and pressure damage opal structure.
- Harsh chemicals: Bleach, ammonia, acetone (nail polish remover), and commercial jewelry cleaners can all damage opals.
- Prolonged soaking: Especially for doublets and triplets — water can seep under the glue layer and cause the stone to delaminate.
Storing Your Opals
Proper storage is just as important as proper cleaning.
- Avoid extreme dryness: If you live in a very dry climate or store opals in air-conditioned environments for extended periods, consider storing them in a small zip-lock bag with a damp (not wet) cotton ball or cloth. This helps maintain their moisture content.
- Avoid extreme heat: Never leave opal jewelry in a hot car, near a heater, or in direct sunlight for extended periods.
- Store separately: Harder gemstones (diamonds, sapphires) can scratch opal surfaces. Keep opals in their own pouch or compartment.
- Use a fabric-lined jewelry box: Avoid hard plastic containers that can scratch the stone.
Wearing Your Opals Wisely
Think of opal as a gemstone for "second to last" — put it on after applying cosmetics, perfume, and hairspray, and take it off before physical activities.
- Remove opal rings before washing dishes, gardening, or exercising.
- Take off opal jewelry before swimming in chlorinated pools or the ocean.
- Avoid wearing opal rings during activities where the stone might take a hard knock.
Special Notes for Doublets and Triplets
Assembled stones (doublets and triplets) require even more careful handling than solid opals. The adhesive layer between the opal slice and its backing can be compromised by moisture and heat. Never soak these stones, and avoid any prolonged contact with water. Wipe clean only with a lightly dampened cloth.
When to See a Professional
If your opal develops crazing (a spider-web of fine cracks on the surface), consult a professional gemologist or lapidary. In some cases, very light re-polishing can restore the surface. However, deep crazing is generally irreversible and is a sign that the stone experienced significant thermal or moisture stress. A jeweler can also check that your opal's setting remains secure — loose prongs are a major risk for losing a stone.
A Simple Routine Goes a Long Way
Caring for opal doesn't require expensive products or elaborate rituals. A regular gentle wipe-down, thoughtful storage, and awareness of what your opal shouldn't be exposed to will keep it brilliant for decades. Treat it gently, and it will reward you with its extraordinary beauty for a lifetime.