Black Onyx Necklaces

Onyx belongs to the chalcedony family, a cryptocrystalline form of quartz, and the black variety is prized for being fully opaque and evenly dark. The stones in this collection are genuine onyx, cut mostly as smooth cabochons or flat tablets so the surface stays glossy and the color reads solid from any angle. One honest note on color: nearly all black onyx sold today, ours included, is dyed and color-stabilized to reach that deep even black. This is a standard, long-standing practice, and it is permanent, so the color will not fade or wash out with normal wear. Dyeing does not make the stone artificial; it is still natural onyx, treated the way the trade has treated it for generations. Across the 16 active styles you will find onyx on its own and onyx paired with small natural diamond accents. If a piece includes diamonds, its product page states that detail along with the metal.

Onyx reads 6.5 to 7 on the Mohs hardness scale, which puts it in the same neighborhood as other quartz stones. That is hard enough for regular necklace wear, since a pendant sits protected at the chest rather than taking the daily knocks a ring does. Still, onyx is a touch softer and more porous than gems like sapphire, so a little care keeps it looking its best. Harder materials can scratch it, so store each necklace on its own or in a soft pouch, away from diamonds and other stones. Keep it clear of harsh household chemicals, and take it off before heavy cleaning or gardening. Put the necklace on last, after perfume and lotion, so nothing settles into the polish or the setting. Treated this way, an onyx necklace holds its glossy black finish for years, and the solid 14K gold or platinum setting stands up well to daily life.

Onyx is not one of the modern birthstones, so there is no single month it officially represents. What it does carry is a long history of meaning. For centuries onyx has been linked with strength, protection, and grounding, which is part of why the symbol pieces here resonate: the evil eye is worn to deflect bad energy, the ankh signals life, and the Eye of Horus stands for protection and clarity. Because black is a sharp neutral, an onyx necklace also works as a quiet everyday talisman rather than a loud fashion swing. People often reach for it during a big transition, a new job, a move, a fresh start, when a grounding piece feels right. It also makes a thoughtful gift outside the usual birthstone calendar, since you are choosing it for what it means rather than for a date. If you want a specific symbol, filter to the evil eye, ankh, or Eye of Horus designs.

This collection runs 16 active styles, so there is range if you want something plain or something detailed. On the clean end you have a plain pendant, a cabochon solitaire, a bezel-set design, and a heart-cut. Step up in detail and you reach the diamond halo statement, the French-set diamond halo, the cabochon and diamond pendant, and the cabochon and diamond halo, all of which set onyx against small natural diamonds. There is a cabochon pyramid and a cabochon heart for shape, plus a geometric design for a more angular, modern look. The symbol motifs are a real feature here: an evil eye, an ankh, an Eye of Horus, and an onyx and diamond charm, each pairing the black stone with diamond accents. Every product page lists the exact metal and any diamond detail for that piece, so you can compare settings side by side before you choose.

Every necklace in this collection is made in solid 14K gold or platinum, never plated, so the metal is the same all the way through and will not wear away at the surface. You can choose 14K in white, yellow, or rose gold, or step up to platinum. White gold and platinum both give a cool, bright frame that makes the black of the onyx look crisp and modern. Yellow gold brings warmth and a more classic, high-contrast look against the dark stone. Rose gold softens the whole piece with a pink cast that reads romantic. Platinum is the densest and most naturally white of the options and needs no rhodium plating to stay bright. Because each necklace is made and set to order, you pick the metal that suits your skin tone and the rest of your jewelry. If you would like a metal or finish that is not shown on a given style, our concierge can customize it for you.

Each necklace comes on either a 16 inch or an 18 inch chain, and you choose the length on the product page. A 16 inch chain sits high, close to the base of the neck, and works well with open necklines and for a choker-adjacent look. An 18 inch chain drops a little lower, resting near the collarbone, which is the most common everyday length and layers cleanly under and over other necklaces. If you are buying as a gift and are not sure, 18 inches is the safer default for most adults. Onyx pendants tend to carry some visual weight because the stone is opaque and dark, so they read clearly at either length. If you layer, pairing a 16 inch onyx piece with a longer chain gives you separation between the two. Should you need a length outside these two options, our concierge can arrange a custom chain since every piece is made to order.

Many pieces in this collection pair onyx with small natural diamonds, and the contrast is the whole point: bright white sparkle set against a flat black ground. The diamond styles include the diamond halo statement, the French-set diamond halo, the cabochon and diamond pendant, the cabochon and diamond halo, and the symbol pieces like the evil eye, ankh, Eye of Horus, and onyx and diamond charm. The diamonds are natural, and each product page states the diamond detail for that specific design so you know exactly what you are getting. If you prefer onyx on its own, plenty of styles skip the diamonds entirely, including the plain pendant, the cabochon solitaire, the bezel-set, and the heart-cut. Because everything is set to order, the diamonds and onyx are both chosen and set for your piece rather than pulled from a shelf. The all-in price already includes the diamonds, the onyx, and the chain, with nothing added when you check out.

An onyx necklace suits someone who leans toward a sharper, more modern palette rather than pastels or bright color. Black goes with everything, so it is a low-risk gift even if you do not know the recipient's full jewelry wardrobe. For a first piece, the plain pendant or cabochon solitaire is an easy yes. For something with more meaning, the symbol designs carry real weight: the evil eye for protection, the ankh for life, the Eye of Horus for clarity. For a dressier gift, the diamond halo statement or French-set halo brings sparkle without color. Onyx also works as a gift outside the birthstone calendar, since you are choosing it for its look and its long association with strength and grounding. Because each necklace is made and set to order in solid 14K gold or platinum, it arrives as a finished, giftable piece. If you want help choosing between styles or metals, our concierge can talk it through.

Prices in this collection start around $569 and run up to about $2,519, depending on the style, the metal, and whether the design includes diamonds. The number you see on each product page is the price of the complete, finished necklace: the onyx, any natural diamond accents, and the chain are all included. Nothing is added at checkout, so there are no surprise charges for the setting, the stones, or the chain length you pick. Simpler designs like the plain pendant and cabochon solitaire sit toward the lower end, while the diamond halo statement and other diamond-heavy styles reach the higher end. Platinum costs more than 14K gold because the metal itself is denser and more valuable. Every order also includes free insured shipping, easy returns, and a lifetime warranty, and each piece is made and set to order rather than mass produced. If a style is close to what you want but not exact, the concierge can quote a customization.

Onyx is easy to care for as long as you keep it away from the harsh stuff. To clean it, wipe the stone and setting with a soft cloth dampened with water and a little mild soap, then dry it thoroughly. Skip ultrasonic and steam cleaners entirely, because the heat and vibration can affect dyed onyx and its polish. Keep the necklace away from harsh household chemicals, bleach, and anything abrasive, all of which can dull the surface. Since onyx is softer than many gems, store each piece on its own or in a soft pouch so harder stones like diamonds cannot scratch it. Put the necklace on after your perfume and lotion have dried, so oils and fragrance do not build up around the stone or in the setting. The solid 14K gold or platinum can take a gentle polish with a jewelry cloth. With this light routine, your onyx keeps its deep black color and glossy finish for the long haul.