Become an opal expert
Every opal is unique.
One of a kind.
No two opals are alike; these guides explain what makes each one unique.
Birthstone
Opal, the October birthstone
Opal is October's birthstone. What it means, its colors, why opal beats tourmaline, and how to choose an opal that lasts generations.
The stones
Black opal, explained
Black opal is the rarest form of opal, mined almost exclusively at Lightning Ridge, Australia. What body tone means, what harlequin and red-on-black are, and why it's rare.
Price
What black opal costs, from someone who buys the rough
Real per-carat price bands for Australian black opal by body tone, brightness and pattern — and why a $150 'black opal ring' can't be solid stone.
Origin
Lightning Ridge — the only ground on earth that makes black opal
Why nearly all true black opal comes from one field in New South Wales, what nobbies and seam opal are, and how to check a Lightning Ridge claim before you pay for it.
Trust
How to tell if an opal is real — six checks, in order of usefulness
Six checks you can do without a loupe to tell solid opal from doublets, triplets, treated stone and lab-created material — and what a certificate has to say to mean anything.
Trust
Solid opal vs. doublets and triplets
Doublets and triplets are thin opal veneers glued to a backing. How to spot a doublet opal ring or an opal triplet pendant, what they should cost, and why solid opal is the heirloom-grade choice.
The stones
Australian vs. Ethiopian opal
Ethiopian opal is beautiful, affordable, and hydrophane — it absorbs water and can change permanently. Why Australian opal is the stability benchmark, and what each should cost.
Price
What opal costs, type by type
Per-carat price bands for black, boulder, crystal and white Australian opal, what drives each one, and what a finished ring or pendant should cost.
Buying
Is opal too soft for an engagement ring? Honestly, it depends on the setting
A cutter's straight answer on opal hardness, the settings that survive daily wear, which opal types to choose, what to budget, and when I'd say no.
Care
Caring for opal jewelry
Can opals get wet? Solid Australian opal, yes. How to clean opal jewelry, why ultrasonic cleaners are out, how to store it, and the doublet exception to every rule.
The stones
Natural imperfections in opal, explained
Natural opal often carries potch, sand, or ironstone matrix from the ground it formed in. What's normal, what a matrix opal ring actually is, and when an inclusion is a real problem.
See it in stone