The Magic of Opals
No gemstone is quite like an opal. Its mesmerizing play of color — flashes of rainbow spectral colors that shift as the stone moves — makes each opal unique. As the October birthstone, opals have a special place in jewelry traditions worldwide.
Buying an opal requires different knowledge than buying a diamond or emerald. Here’s what you need to know to find a stunning opal.
Types of Opals
- Black Opal: The most valuable type, with a dark body color that makes the play of color pop dramatically. Primarily from Lightning Ridge, Australia.
- White Opal: Light body color with play of color. More affordable and widely available.
- Boulder Opal: Thin veins of opal on ironstone. Unique patterns and good value.
- Fire Opal: Transparent to translucent with warm orange-red body color. May or may not show play of color.
Our Top Opal Picks
Ethiopian Opal Solitaire Ring
A stunning oval Ethiopian opal with vivid play of color set in 14K rose gold. Each stone is unique.
See Price on Amazon →Australian Opal Pendant Necklace
Genuine Australian opal pendant in sterling silver with a delicate chain. Beautiful rainbow play of color.
See Price on Amazon →Opal Stud Earrings in 14K Gold
Round cabochon opal studs in 14K yellow gold. Classic design showcasing the opal’s natural beauty.
See Price on Amazon →Opal Care — Important!
- Opals contain water (3-21%) and can crack if they dry out. Store in a humid environment or with a damp cloth.
- Rate 5.5-6.5 on Mohs scale — avoid impacts and store carefully.
- Never use ultrasonic cleaners or steamers. Clean gently with a damp soft cloth.
- Avoid extreme temperature changes, chemicals, and prolonged direct heat.
Frequently Asked Questions
Can opals crack or craze?
Yes, opals can develop fine surface cracks (“crazing”) if they lose moisture or experience rapid temperature changes. Proper storage and care prevent this.
What is “play of color” exactly?
Play of color is the shifting rainbow of spectral colors visible in precious opals. It’s caused by the diffraction of light through the opal’s internal structure of silica spheres.
Are Ethiopian opals good quality?
Ethiopian opals can be excellent quality with vivid play of color, often at lower prices than Australian opals. They are hydrophane (absorb water), which requires slightly different care.
