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Stone 101

Opal

Not even a crystal. Opal is hardened silica gel, and the rainbow comes from tiny spheres.

Opal ranges from milky blue to cherry orange to rainbow flash. Here you'll find opal rings and bracelets, dendritic opal, cherry opal, and some opalite and opal aura pieces, labelled as such.

Colour
White, blue, orange, rainbow flash
Hardness
Mohs 5.5 to 6.5
Found in
Australia, Ethiopia, Mexico
Birthstone
October
Family
Mineraloid (hydrated silica)

Shop Opal by shape

54 Results

AURORA Opal Disc Necklace - Gold or Silver from The Rock Space
AURORA Opal Disc Necklace - Gold or Silver Silver from The Rock Space
Partner brand

AURORA Opal Disc Necklace - Gold or Silver

$35.00

Unit price
per 

2 colors
Enya Pink Opal Hoops from The Rock Space
Enya Pink Opal Hoops from The Rock Space
Partner brand

Enya Pink Opal Hoops

$55.00

Unit price
per 

Opal Star Necklace from The Rock Space
Opal Star Necklace from The Rock Space
Partner brand

Opal Star Necklace

$45.00

Unit price
per 

Opal Crescent Moon Necklace - Gold from The Rock Space
Opal Crescent Moon Necklace - Gold Gold from The Rock Space
Partner brand

Opal Crescent Moon Necklace - Gold

$45.00

Unit price
per 

2 colors
Opal Starlight Necklace from The Rock Space
Opal Starlight Necklace from The Rock Space
Partner brand

Opal Starlight Necklace

from $35.00

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per 

Opal Star Beam Necklace from The Rock Space
Opal Star Beam Necklace from The Rock Space
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Opal Star Beam Necklace

from $35.00

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per 

Opal Hoop Earrings - 15mm from The Rock Space
Opal Hoop Earrings - 15mm from The Rock Space
Partner brand

Opal Hoop Earrings - 15mm

$55.00

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per 

Willow Opal Necklace Rhodium Plated from The Rock Space
Willow Opal Necklace Gold plated from The Rock Space
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Willow Opal Necklace

from $50.00

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Opal Disc Necklace Silver from The Rock Space
Opal Disc Necklace from The Rock Space
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Opal Disc Necklace

from $25.00

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per 

Opal Crescent Moon Necklace - Silver from The Rock Space
Opal Crescent Moon Necklace - Silver from The Rock Space
Partner brand

Opal Crescent Moon Necklace - Silver

$28.00

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per 

2 sizes
  • Silver
  • Gold
Opal Sun Necklace - Gold from The Rock Space
Opal Sun Necklace - Gold from The Rock Space
Partner brand

Opal Sun Necklace - Gold

$35.00

Unit price
per 

Whimsy Opal Flower Necklace - Gold from The Rock Space
Whimsy Opal Flower Necklace - Gold from The Rock Space
Partner brand

Whimsy Opal Flower Necklace - Gold

$50.00

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per 

Evil Eye Opal Huggies - Gold Plated from The Rock Space
Evil Eye Opal Huggies - Gold Plated from The Rock Space
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Evil Eye Opal Huggies - Gold Plated

$39.00

Unit price
per 

Sun Evil Eye Opal Necklace from The Rock Space
Sun Evil Eye Opal Necklace from The Rock Space
Partner brand

Sun Evil Eye Opal Necklace

from $25.00

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per 

Opal Studs - Gold Plated from The Rock Space
Opal Studs - Gold Plated from The Rock Space
Partner brand

Opal Studs - Gold Plated

$45.00

Unit price
per 

Ophelia Opal Stud Earrings from The Rock Space
Ophelia Opal Stud Earrings from The Rock Space
Partner brand

Ophelia Opal Stud Earrings

$55.00

Unit price
per 

The basics

So what is opal, really?

Opal is silica with water locked inside. It never forms a crystal grid, so geologists call it a mineraloid instead of a mineral.

In precious opal, tiny silica spheres sit in neat rows and split light into colours. Common opal, like blue, cherry and dendritic opal, glows softly instead.

Rituals, not rules

How people use it

  • It's the October birthstone, so a ring or pendant is a classic birthday gift.
  • People wear it in a ring or bracelet so the colour catches the light all day.
  • It's traditionally linked with creativity, so some folks keep a piece on the desk where they make things.

These are traditions people enjoy, not promises. Pick the one you keep coming back to.

Care

Looking after your Opal

  • Water: quick rinse only
  • A quick rinse in lukewarm water is fine. Dry it right away and never soak it.
  • Keep it away from heat, hot cars and sudden temperature changes, which can crack it.
  • It's softer than quartz, so store it apart from harder stones.

Straight talk

Real, treated or lab-made?

Opalite is man-made glass, and it's gorgeous, but it isn't opal. Opal aura is quartz with a thin metal coating. Lab-grown opal and thin slices glued to backing also exist. TRS labels every synthetic or coated piece in the title, like "(Synthetic)" or "Aura".

Good questions

Opal questions people ask us

What does opal mean?

Opal is traditionally linked with creativity, hope and self-expression. Most people just love the colour play.

Is opalite the same as opal?

No. Opalite is man-made glass with a milky blue glow. Opal is natural silica from the ground. Both are pretty, they're just different things.

Can opal go in water?

A quick rinse is fine for most opal. Dry it right after and don't soak it. Some Ethiopian opal soaks up water and goes cloudy for a while, so be extra gentle with it.

Why do opals crack?

Opal holds water. Heat, very dry air or a sudden temperature change can make it lose water fast and form fine cracks. Store it at room temperature, away from heaters.