Onyx is the quintessential black gem and has been worn in jewelry since antiquity. In the past it was extremely valuable and outside the reach of most people but in recent years it has become a bit more affordable. However, before shopping for it, there are a number of important things you should know.

Onyx Characteristics

While neophytes may consider onyx to be little more than a rock which is black colored, it is far more. It actually comes in other colors, such as green, and this versatility allows it to be embedded into multiple jewelry types. It has a luster which is both glossy and smooth, which gives it a stylish, timeless appearance that you’ll definitely want in your jewelry collection.

Onyx is a type of chalcedony which is layered, and is akin to agate. However, while agate exists in bands which are curved, onyx layers are parallel. Ancient jewelry makers enjoyed using it to produce intaglio rings and cameos, and due to its gorgeous layers, they learned to alter the color in a manner that resulted in spectacular reliefs. Onyx is extremely popular in China, South America, Indonesia, Australia and India.

How To Evaluate Onyx When Shopping For It

Whether you’re looking for onyx in an online store or a physical one, there are a number of attributes you’ll want to consider. The first of these is the color itself. As stated previously, onyx comes in multiple colors, but the most prized is black. Most gemstones will actually be dyed to produce black coloration, and other popular colors include sard, which has a brownish/orange color which is darker at the base and lighter near the top. There is also cornelian onyx which is red colored.

The second factor you will need to consider is the cut. As with diamonds, onyx cuts are important. In most cases onyx will be sliced into cabochons which are glossy and smooth or it may be faceted so that the luster is maximized. Typical shapes that they will be cut into include emerald, trillant, oval, pear, round and marquise. Onyx is quite soft, which means it works well with carvings.

The final factor that you’ll want to evaluate is the clarity. Onyx gems should always be free of impurities, and are best known for their luster, which ranges from dull to shiny. Most of the onyx gemstones you come across will be opaque, and when shopping for it, be on the lookout for those which have a surface that is smooth, with no inclusions or cracks. This will guarantee that the luster is both smooth and uniform.

Types Of Onyx Jewelry You Can Buy

Due to its versatility and stylish appearance, onyx can be used in all sorts of jewels. They are used in bracelets, earrings, pendants and rings. Since black is a neutral color, black onyx jewelry can be worn with virtually any outfit you have. Regarding care, onyx can be cleaned using water or soap, but should never be exposed to strong detergents or bleach.