Vintage opal & diamond ring
Opals are one of the most captivating gemstones, prized for their variety & unique play-of-color. They stand apart from other gems with their mesmerizing iridescence but require thoughtful care to maintain their luster and durability.
What Makes Opals Unique?
Opals differ from most gemstones because they lack a crystalline structure; instead, they are amorphous, formed from tiny silica spheres that diffract light. These structures create the “play-of-color” phenomenon, displaying flashes of multiple hues that shift in the light, a feature rarely seen in other gemstones. Opals have a water content of roughly 3% to 21%, which contributes to both their vibrant appearance and their delicate nature.
Unlike gems such as sapphires or rubies that are normally faceted, most opals are cut as cabochons (smooth, rounded domes) to optimize their color display. They are softer than most gemstones—just 5-6.5 on the Mohs scale—making them more susceptible to dulling and requiring more careful consideration.
What Are the Different Types of Opals?
There are several major types of opals, each with distinct characteristics:
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White Opal has a pale background, making the play-of-color appear pastel & dreamy.
White opal diamond ring
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Black Opal is characterized by a dark background which enhances the play-of-color, making it the most valuable type.
Vintage black opal diamond ring.
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Fire Opal, known for its warm body colors such as red, orange, or yellow, with or without play-of-color.
Yellow & white gold fire opal diamond earrings
- Ethiopian Opal, are a relatively recent discovery from northern Ethiopia. These opals stand out for their vivid play-of-color and hydrophane quality, meaning they can absorb water and temporarily change appearance when wet.
Pear shaped Ethiopian opal diamond pendant
- Boulder Opal: Occurs in ironstone boulders; features thin veins of opal within the host rock, offering great durability & vibrant play of color.
Yellow gold boulder opal diamond ring
Opal doublets have the same veins as boulder opals, but have been separated from the host rock to stabilize & reattach to the host rock or black onyx. Opal triplets additionally have a harder clear quartz dome on top to give greater durability.
How Should I Care for My Opal?
Opals are delicate and require more care than other gemstones:
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Cleaning: Use only warm, soapy water and a soft cloth or toothbrush. Avoid ultrasonic cleaners, steam, harsh chemicals, or bleach, as they can crack or dull the stone.
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Handling: Since opals are softer and can be scratched easily, remove jewelry during heavy activity and store individually.
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Exposure: Keep opals out of freezing or extremely hot temperatures, which can cause them to fracture. Sudden temperature changes can cause cracking or crazing. Extreme dryness can draw water out of opals, making them brittle—store with a damp cloth in dry climates if necessary. Also avoid abrasives, soil, sand, drywall dust, scouring powder, etc.
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Chemicals: Keep away from perfumes, hairsprays, and cleaning agents.
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Moisture: Solid opals generally tolerate water, but composite stones (doublets/triplets) can be damaged if soaked. Prolonged immersion can cause fogging or separation of layers.
With the right care, opals can retain their mesmerizing beauty for generations to come.
Conclusion
Opals are beloved for their color-changing magic and diversity of form, but their softer composition means you must take some extra care. Proper storage, gentle cleaning & mindful handling are key to maintaining their enchanting glow & unique charm.
Come in & explore the wonderful world of opals or see our beautiful opal collection on line.
