Ethiopian opal stone - GemstonesForSales
You know that opal comes in all shapes, sizes and colors right? Opals are indeed one of the most mesmerizing gemstones in the world, famous for their magical play-of-color and dreamy appearance. But you see, not all opals are created equal.
From galaxy-look-alike black opals that are sold in thousands of dollars to affordable soft white opals, to even lab-made versions, the variety can leave buyers scratching their heads.
So, what’s the real difference between the various types of opal stone? And how do you know which one is to invest in (cuz let’s be real – spending money on gemstones isn’t always a child’s play)
Let’s break it down.
1. Natural Opal vs Synthetic Opal
This is the first distinction every buyer should understand.
Natural Opal
Natural opals are formed through earth’s own geological processes that take over millions of years. However even natural opals aren’t always sold as standalone pieces. Sometimes they are sold as doublets or even triplets (layered with other materials) to enhance their overall beauty.
Why choose it?
- One-of-a-kind patterns
- Earth-born energy
- Higher resale value
Synthetic Opal
Also known as lab-created opals, these are made in controlled environments to mimic the appearance of real opals. While they may look similar, synthetic opals lack the organic structure and energy of their natural counterparts.
How to spot the difference?
Synthetic opal often show a repeating “snake skin” pattern and lack the depth and irregularity of real opals.
Pro Tip: Always ask your seller to disclose whether the opal is natural or synthetic—and look for certification when you buy opal gemstone online.
2. Precious Opal vs Common Opal
Precious Opal
These are the opals you probably imagine—shimmering, shifting colors that change in the light. The play-of-color is caused by silica spheres arranged in microscopic grids that diffract light.
Popular Types of Precious Opal:
- Black Opal: Dark body tone, vivid color contrast
- White Opal: Light body tone, soft pastel colors
- Crystal Opal: Transparent to semi-transparent, with brilliant flashes
- Fire Opal: Orange to red, sometimes with play-of-color
- Boulder Opal: Found in ironstone rock, colorful layers embedded in host material
Common Opal (a.k.a. Potch)
These opals do not show play-of-color. They can be beautiful in their own right—available in pink, green, blue, and more—but they’re less valuable.
Why it matters:
Precious opal are prized for their visual complexity and rarity. Common opals are more budget-friendly and often used in fashion jewelry.
3. Types of Opal Stone by Origin
Where an opal comes from also affects its value, appearance, and availability.
Australian Opal
Known for high-quality black opals, white opals, and boulder opal. The Lightning Ridge region produces some of the rarest stones in the world.
Ethiopian Opal
A newer discovery in the gemstone world. Known for its affordability and vibrant colors, especially in crystal opals. However, some Ethiopian opals are hydrophane, meaning they can absorb water and change appearance.
Mexican Fire Opal
Famous for intense orange-red body color. Some exhibit play-of-color; others do not. Excellent for those looking for bold, warm hues.
Tip: The opal stone price can vary drastically by origin. Black opals from Australia may cost thousands per carat, while a colorful Ethiopian crystal opal can be found at a fraction of the price.
4. Solid Opal vs Doublets and Triplets
If you’re shopping online, you’ll often encounter these three construction types:
Solid Opal
One solid piece of natural opal—no layers, no tricks. This is the most valuable and durable.
Doublet
A thin slice of opal glued to a backing material (often black potch or ironstone) to simulate a thicker, more vibrant stone.
Triplet
Like a doublet, but with a clear quartz cap on top. This enhances the appearance but makes the gem more prone to scratches.
Buyer’s Note: Doublets and triplets can be great budget options, but they don’t hold value like solid opals do. Ask your seller for clear labeling when you buy online gemstone jewelry or loose stones.
5. What Influences Opal Stone Price?
Here’s what affects the opal gemstone price:
- Play-of-Color: More vivid = more valuable
- Body Tone: Black opals tend to be pricier
- Clarity & Transparency: Especially important in crystal opals
- Pattern: Rare patterns like harlequin or floral fetch higher prices
- Size & Carat Weight: Larger stones = premium pricing
- Origin: Australian black opals command top dollar
6. Where to Buy Authentic Opals Online
Choosing the best website to buy gemstones is just as important as picking the right stone. Here’s what to look for:
- Clear product descriptions (type, origin, treatment)
- Certification for high-value stones
- Transparent pricing based on industry standards
- Positive customer reviews
- Return policies
Whether you’re looking for investment gems or a personal treasure, [GemstonesForSale] offers ethically sourced, high-quality opal gemstones for sale across all categories—from fiery Mexican opals to rare Lightning Ridge blacks.
Final Thoughts
Understanding the types of opal stone helps you make an informed, confident purchase. Whether you’re drawn to the mystical flashes of a black opal or the delicate shimmer of a crystal opal, there’s a stone out there that matches your energy—and your budget.
So the next time you buy opal gemstone online, you’ll know exactly what to look for—and what questions to ask.
Because when it comes to opals, no two are alike—and that’s what makes them priceless.
