Onyx is a gemstone known for its elegant and dramatic appearance. But unlike many gemstones that come in a rainbow of hues, the color of onyx is primarily associated with dark tones. So, What Is The Color Of Onyx exactly?
While often thought of as simply black, onyx actually encompasses a spectrum of dark colors, ranging from deep black to rich browns and even dark greens. The most prized onyx stones are a solid, jet black, often used in jewelry and decorative objects.
[image-1|black-onyx-stone|Black onyx stone|A close-up image showcasing the deep, inky black color of a polished onyx stone, often considered the most desirable type of onyx.]
Deciphering the Shades of Onyx
The fascinating array of onyx colors comes from the way the stone forms. Onyx is a variety of chalcedony, a type of quartz formed by layers of silica deposits. The color variations in onyx are created by the presence of different mineral impurities within these layers.
Here’s a closer look at the most common onyx colors:
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Black Onyx: This is the most famous and sought-after onyx variety, known for its deep, solid black color. It gets its intense hue from the presence of carbon or organic matter within the stone.
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Sardonyx: Characterized by bands of reddish-brown and white, sardonyx is another popular onyx variety. The reddish-brown hues come from the presence of iron oxide.
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Carnelian Onyx: Similar to sardonyx, carnelian onyx features bands of orange and white. The orange color is also caused by iron oxide, but in different concentrations than in sardonyx.
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Green Onyx: Though less common than black or brown varieties, green onyx displays attractive shades of dark green, often with lighter green or white banding.
[image-2|onyx-color-variations|Variations in onyx color|A display of different onyx stones showcasing the variety in colors, including black, brown (sardonyx), orange (carnelian onyx), and green onyx.]
Beyond the Surface: The Significance of Onyx Color
The color of onyx has played a significant role in its cultural and historical significance. In ancient times, onyx was believed to possess protective and grounding properties.
- Black onyx, in particular, was associated with strength, courage, and determination.
- Sardonyx was thought to promote happiness and good fortune.
- Green onyx was believed to bring balance and harmony.
Today, onyx is still valued for its beauty and elegance. Its rich, dark colors make it a popular choice for jewelry, decorative objects, and even architectural details.
Onyx Color FAQs:
1. Is all black onyx naturally black?
While naturally black onyx does exist, some black onyx on the market may have been treated to enhance its color. This typically involves soaking lighter-colored onyx in a sugar solution and then treating it with sulfuric acid to carbonize the sugar, resulting in a deep black color.
2. Can onyx fade in color?
Onyx is a relatively durable gemstone, but its color can fade over time if exposed to prolonged sunlight or harsh chemicals.
3. How can I tell if onyx is real?
Real onyx will feel cool and heavy to the touch. It will also be opaque, meaning light cannot pass through it. If you hold a piece of onyx up to a light source, you should not be able to see through it.
[image-3|identifying-real-onyx|Identifying real onyx|An image demonstrating the test of holding an onyx stone against a light source; real onyx will not allow light to pass through, indicating its authenticity.]
Need help with onyx or other color inquiries?
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