The Bright Classic with Lively Fire
White opal is often underrated — yet this bright stone carries a play of color that can rival its pricier relatives, once you know what to look for. It gets lumped together with plain milk opal, even though the two are different things. And because good stones stay affordable, it is the perfect entry into the world of opals.
What is a white opal?
A white opal is a precious opal with a light, white to pale gray body color and a distinct play of color. That places it firmly among the precious opals, because the dancing fire inside is its signature.
The bright base comes from tiny inclusions that scatter light. Unlike black opal, the play of color here sits against a light rather than dark background. That makes the overall look friendlier and brighter, and depending on quality, the fire ranges from a soft shimmer to strong, saturated flashes.
Fact Sheet: White Opal
Hardness (Mohs)
5.5–6.5
Body color
White to pale gray
Water content
6–10%
Play of color
subtle to vivid
Main origin
Coober Pedy, Australia
Type
Precious opal
Is white opal the same as milk opal?
Not quite. The two terms are often mixed up, but they do not mean the same thing. White opal, as a precious opal, shows a play of color. Milk opal, strictly speaking, refers to a milky, cloudy opal that usually belongs to the common opals and shows little or no play of color.
In the jewelry trade, "milk opal" is sometimes used loosely for any light-colored opal, which adds to the confusion. The simple rule of thumb: if the stone shows a play of color, it is a white precious opal. If it only shimmers milkily, without dancing fire, it is a milk opal in the true sense. When buying, always take a close look at the play of color.
How does white opal form?
Like all Australian opals, white opal was born of water and time. Around 100 million years ago, silica-rich groundwater seeped into light sandstone layers of the Outback and slowly solidified into opal as it evaporated.
Tiny silica spheres arranged themselves into a regular lattice that diffracts light and creates the play of color. The light body color comes from the pale host rock, which scatters light instead of swallowing it.
Where does white opal come from?
White opal's most important home is Coober Pedy in South Australia, often called the "opal capital of the world." Opal was discovered there in 1915 by Willie Hutchison, then just fourteen years old. A large share of the world's opal production comes from this region.
Other sources include Andamooka, Mintabie, and the historic White Cliffs. Common milk opal without play of color was once also found in Europe, above all in Slovakia, one of the world's oldest opal sources.
How brightly does white opal shine?
More brightly than many expect. True, the play of color against the light base often looks softer than in black opal, but a good white opal can glow vividly and richly, with clear greens, turquoises, blues, and even reds.
Top stones from Coober Pedy concede little to a dark opal in terms of fire. Typical patterns include fine pinfire speckles, broad flashes of color, and floral fields. And the basic rule of all opals applies here too: the livelier the play of color and the more red it contains, the more valuable the stone.
A white opal with a strong, clear play of color and a touch of red can be considerably more expensive than a dark opal with pale fire. What matters is the liveliness of the colors, not the body color alone.
How much does a white opal cost?
White opal is the most common precious opal, and that makes it the most affordable entry into the world of opals. You can get beautiful stones for little money, though the upper end of the range is open.
| Quality | Play of color | Price per carat (guide) |
|---|---|---|
| Entry level | subtle, single colors | approx. 10–50 € |
| Good | lively, multicolored | approx. 50–250 € |
| Top | vivid, lots of color, some red | 200–1,000 €+ |
Price is driven by the liveliness of the play of color, the share of red, size, and clarity. A milky opal with no play of color at all is inexpensive and makes a pretty tumbled stone, while a light precious opal with strong fire is worth considerably more. All figures are guide values, as of 2026, and can fluctuate with the market.
What is the meaning of white opal?
White opal stands for purity, innocence, and hope, and like all opals it is the birthstone of October. Its light color has long made it a symbol of a clear, open mind.
In folklore, the light opal was considered a protective stone that brings optimism and inner calm. In crystal healing, it is traditionally credited with a calming, harmonizing effect said to encourage openness and creativity. These are traditional attributions, not a medical promise.
Real or imitation: how can you tell the difference?
A genuine white opal has a naturally wavy back and a play of color that reveals depth as you tilt it. With light opals, watch out for one common mix-up in particular: "opalite" is usually not opal at all, but man-made glass.
Genuine white opal
How to recognize it
- Naturally wavy back, often with light host rock
- Play of color shows depth and shifts as you tilt the stone
- Opalescent, lively luster
- Every pattern is unique
Opalite, glass & synthetics
Warning signs
- "Opalite": usually man-made glass, not genuine opal
- Glass: uniform shimmer, often air bubbles
- Synthetics: regular snakeskin pattern
- Doublet: glue line to a dark backing layer
How do you care for your white opal?
Australian white opal is low-maintenance, because it does not absorb water. With a little care, it will stay with you for generations.
Clean it with lukewarm water, a drop of mild soap, and a soft cloth. Skip ultrasonic and steam cleaners as well as chemicals and hairspray, and protect it from hard knocks. Store it in normal room air rather than a bone-dry box, and feel free to wear it often — that is what keeps it beautiful.
Genuine opal, not glass
With light opals especially, where man-made glass like "opalite" is so often sold as opal, certainty matters. That is why every piece at Liberty Angels comes with our GSB certificate: linked online to each order, which makes it tamper-proof. You know exactly what you are wearing — genuine opal in 925 silver or 14K gold.
Frequently asked questions about white opal
What is a white opal?
A precious opal with a light, white to pale gray body color and a play of color ranging from subtle to vivid. It is the most common and most affordable precious opal.
Is white opal the same as milk opal?
No. White opal, as a precious opal, shows a play of color. Milk opal is usually a common opal that only shimmers milkily, often without any play of color. In the trade, though, the terms are frequently mixed up.
How brightly does a white opal shine?
Anywhere from a soft shimmer to strong, lively fire. Good stones from Coober Pedy show clear greens, turquoises, blues, and reds and concede little to a dark opal.
Is white opal rare?
No, it is the most common precious opal. That is exactly what makes it affordable. Only specimens with an exceptionally lively play of color are rare and expensive.
How much does a white opal cost?
Depending on quality, from around 10 € to over 1,000 € per carat. A milky opal without play of color costs only a few euros, while a light precious opal with strong fire costs considerably more.
Can white opal get wet?
Yes, Australian white opal does not absorb water. Just avoid ultrasonic cleaners, chemicals, and hard knocks.
More from the Opal Lexicon: all opal types at a glance, how to identify a real opal, what your opal is really worth, and how to care for your opal properly.
