Opals, known for their mesmerizing play of color, are mined in various parts of the world, but Australian and Ethiopian opals stand out for their unique qualities. If you’re an opal enthusiast or a potential buyer, understanding the differences between these two types of opals can help you make an informed choice.
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Australian opals above. |
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Ethiopian opals above. *Note the honeycomb pattern on the top opal in the lower right photo. |
- Australian Opals: Australia has been the world’s largest supplier of opals for over a century, with iconic mining areas such as Coober Pedy, Lightning Ridge, and Boulder Opal fields. Australian opals are typically found in sedimentary rock, formed millions of years ago when silica-rich water filled cracks and voids in the Earth’s surface.
- Ethiopian Opals: Ethiopian opals are newer to the market, discovered in the 1990s, and primarily mined in the Wollo and Shewa regions. These opals are volcanic in origin, and are often found closer to the Earth's surface, making them relatively easier to mine.
- Australian Opals: These opals are renowned for their vibrant play of color. Black opals, in particular, from Lightning Ridge, are highly prized due to their dark body tone, which enhances the contrast of the brilliant colors. Australian opals come in a variety of hues, but many display a consistent, rich color spectrum.
- Ethiopian Opals: Ethiopian opals are known for their striking clarity and "honeycomb" patterns, often appearing with translucent or transparent body tones. They can exhibit vivid flashes of color, and tend to have more variety in body tone, ranging from white, to crystal, to dark brown or red.
- Australian Opals: Known for their stability, Australian opals are less prone to cracking or crazing (a network of fine cracks) over time. They are generally not hydrophane, meaning they do not absorb water easily, which adds to their durability.
- Ethiopian Opals: Ethiopian opals are typically hydrophane, meaning they can absorb water. This can cause temporary changes in color and appearance when exposed to moisture. While many collectors appreciate this quality, others find it less desirable due to concerns over long-term stability.
- Australian Opals: Given their historical prestige and durability, Australian opals, especially black opals, often fetch higher prices on the market. Their stable nature and vibrant colors make them a favorite among serious gem collectors.
- Ethiopian Opals: Ethiopian opals tend to be more affordable, though their unique patterns and colors have gained them a growing fan base. However, due to their water sensitivity, some collectors might be cautious about investing in them for long-term collections.
Both Australian and Ethiopian opals offer stunning displays of color, but they differ in terms of origin, durability, and value. Australian opals are known for their long-standing reputation and stability, while Ethiopian opals captivate with their brilliant flashes and unique characteristics. Whether you prefer the classic allure of Australian opals or the bold, contemporary appeal of Ethiopian stones, each has its own charm in the world of gemstones.
Visit my Confetti Collection to see both types of opals!