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    A round faceted black onyx pendant hangs between yellow gold chain links on a pale gray background.
    A close view shows the black stone facets, polished yellow gold bezel, and two side attachment loops.
    A rose gold necklace with a single round black pendant is centered against a light gray surface.
    The black onyx facets and warm rose gold rim are visible beside the small connecting links.
    A circular black onyx pendant sits between two lengths of white gold chain on a gray background.
    A detailed view reveals the glossy black stone, bright white gold bezel, and paired chain connections.
    A woman in a white blouse wears the yellow gold black onyx necklace beside a leafy cafe window.
    A woman holding an open book wears the rose gold black onyx necklace in a wooden bookshop.
    A woman in a terracotta blouse wears the white gold black onyx necklace among greenhouse plants.

    A round faceted black onyx pendant hangs between yellow gold chain links on a pale gray background.

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    Lone Necklace

    Strength Lone Black Onyx Necklace

    $259.00
    Strength Black onyx Daily ritual
    Choose your Metal finish

    Metal finish: 10kt Solid Yellow Gold

    Usually ships in 0–3 business days · tracking sent by email

    1
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    Quality & details
    A single round brilliant black onyx of about 6 millimeters on a 16 inch chain with a 2 inch extender, in 10kt solid yellow, rose or white gold.
    Shipping & returns

    Orders normally ship within 0–3 business days. U.S. shipping is free, tracking is sent by email, and the estimated U.S. delivery time is 7–10 business days after dispatch. Eligible returns can be requested within 45 days of receipt; conditions and exclusions apply. International duties, when charged, are the customer's responsibility.

    Read shipping policy Read return policy

    Modern Energy Lab · Material files

    Materials in this piece

    Natural stones

    Black Onyx

    Black Onyx
    • Dark contrast
    • Smooth surface
    • Personal meaning

    Representative material visualization · Appearance may vary

    Black onyx gives jewelry a deep, dark contrast. A polished surface reflects the light around it, so the same stone can look glossy in one view and nearly matte in another. The exact cut and finish are specified for each piece.

    In this piece: one round brilliant black onyx, about 6 millimeters, as the single main stone.

    What does black onyx symbolize?

    In crystal traditions, black onyx is associated with steadiness, focus and determination. These meanings are cultural and personal; they are not medical benefits or promises of protection or performance.

    Will every black onyx piece have the same shape?

    No. This material can be cut and polished into different forms. Use the individual product photographs and measurements, not the loose-stone reference image, to judge what you will receive.

    How should I care for it?

    Keep the finished jewelry away from hard impacts, harsh chemicals and abrasive cleaners. Follow its product-specific care instructions, including those for metal finishes and other components.

    View pieces

    Crafted materials

    Solid Gold

    Solid Gold
    • Solid Gold texture
    • Solid Gold tone
    • Personal meaning

    Representative material visualization · Appearance may vary

    Solid gold is a crafted metal, made of gold alloy throughout rather than a plated or vermeil layer. Color and finish depend on the karat and the finish of the individual piece; the product photographs and measurements describe the item you will receive.

    In this piece: 10kt solid gold in yellow, rose or white, for the setting and the chain.

    Is it solid gold all the way through?

    Yes. Solid gold is an alloy throughout, so the metal is not a plated or vermeil layer. The karat is shown on the product page.

    Will every solid gold piece look the same?

    No. Variation comes from the material, cut, finish and lighting. Use the individual product photographs and measurements to judge the piece you will receive.

    How should I care for it?

    Keep finished jewelry away from hard impacts, harsh chemicals and abrasive cleaners. Follow the product-specific care instructions, including those for metal finishes and other components.

    View pieces

    Crystal meanings are shared as traditional symbolism for personal reflection. They are not medical, financial, or professional advice, and they do not guarantee an outcome.
    Free U.S. shipping Ships in 0–3 business days Tracking sent by email 45-day return window Damage & order support Secure checkout
    A woman in a white blouse wears the yellow gold black onyx necklace beside a leafy cafe window.
    Lone round black onyx necklace in 10kt solid gold

    One dark stone, lasting gold

    A single round black onyx set in solid gold

    One round brilliant black onyx of about 6 millimeters, set in 10kt solid gold.

    Lone holds one round brilliant black onyx of about 6 millimeters at the front of the chain. The stone has a smooth, dark gloss that reflects light softly, and its round cut gives it an even, steady presence at the neckline.

    The setting is 10kt solid gold, in yellow, rose or white, so the colour runs through the whole piece. The single stone keeps the focus on the black onyx and the clean line of the gold.

    Lone is a simple piece that can be worn every day. It suits knitwear, a crew-neck top or a plain shirt, and it works as a gift for a December birthday or as a considered treat for yourself.

    A close view shows the black stone facets, polished yellow gold bezel, and two side attachment loops.
    Lone necklace worn at the neck

    Classic and easy

    A chain that sits gently at the collarbone

    A 16 inch solid gold chain with a 2 inch extender.

    The chain is 16 inches with a 2 inch extender, a classic length that sits at the collarbone. The extender lets you lower the black onyx for a longer, more relaxed line or keep it close for a neat look.

    Yellow gold gives the stone a warm, classic frame, rose gold adds a soft blush, and white gold keeps the look cool and clean. Each colour is solid gold, so the piece wears well over time.

    The meaning of strength

    Black onyx is often associated with strength, the steady inner resolve that helps a person keep going through a demanding stretch. Its dark, smooth face has long been linked with self-control and calm determination, so Lone suits anyone who values quiet strength. The meaning is yours to choose, and the necklace makes no promise of a particular result.

    Some people give a single black onyx pendant to a friend who has shown great persistence. Others choose one for themselves as a small, lasting reminder of their own steadiness.

    Choosing your length

    The chain is 16 inches with a 2 inch extender. Measure a necklace you already wear and check where the pendant sits on your neckline before you decide.

    The extender lets you try two positions, so you can wear the stone higher for a close look or lower for a relaxed line. Try both in a mirror before you order.

    Caring for the stone and gold

    Black onyx can chip under hard knocks, and chlorine, lotion and sweat can dull its surface. Remove the necklace before swimming, showering, exercise and sleep.

    After wear, wipe the piece with a soft dry cloth and store it in a separate pouch. Keeping it apart from other jewelry protects the stone and keeps the solid gold bright.

    Find your metal tone

    Three 10kt solid gold colours for the same single black onyx necklace. Choose yellow gold for warmth, rose gold for softness or white gold for a cool line.

    10kt solid yellow gold

    Warm 10kt solid yellow gold that holds the round black onyx in a classic golden setting.

    A round faceted black onyx pendant hangs between yellow gold chain links on a pale gray background.
    10kt Solid Yellow Gold · pendant and chain
    A close view shows the black stone facets, polished yellow gold bezel, and two side attachment loops.
    10kt Solid Yellow Gold · stone and bezel close-up
    A woman in a white blouse wears the yellow gold black onyx necklace beside a leafy cafe window.
    10kt Solid Yellow Gold · worn at a cafe

    10kt solid rose gold

    Soft 10kt solid rose gold that brings a warm blush to the round black onyx.

    A rose gold necklace with a single round black pendant is centered against a light gray surface.
    10kt Solid Rose Gold · pendant and chain
    The black onyx facets and warm rose gold rim are visible beside the small connecting links.
    10kt Solid Rose Gold · stone and bezel close-up
    A woman holding an open book wears the rose gold black onyx necklace in a wooden bookshop.
    10kt Solid Rose Gold · worn in a bookshop

    10kt solid white gold

    Cool 10kt solid white gold that keeps the black onyx's gloss crisp and clean.

    A circular black onyx pendant sits between two lengths of white gold chain on a gray background.
    10kt Solid White Gold · pendant and chain
    A detailed view reveals the glossy black stone, bright white gold bezel, and paired chain connections.
    10kt Solid White Gold · stone and bezel close-up
    A woman in a terracotta blouse wears the white gold black onyx necklace among greenhouse plants.
    10kt Solid White Gold · worn in a greenhouse

    Size & materials

    Main stone
    Round brilliant black onyx, about 6 mm
    Cut
    Round brilliant
    Chain length
    16 inches with a 2 inch extender
    Metal options
    10kt solid yellow gold; 10kt solid rose gold; 10kt solid white gold
    Metal
    10kt solid gold, not plated
    Included
    One necklace in your selected gold colour

    Frequently asked questions

    Is the black onyx natural?

    Yes. Black onyx is a natural stone, and its color and polish can vary slightly from one stone to another.

    Is the gold solid?

    Yes. The necklace is made in 10kt solid gold in your chosen colour, so it is not plated or vermeil.

    Is this necklace in stock now?

    The necklace is sold as a standard item. Check the product page for the delivery estimate shown there before you order.

    Can I adjust the length?

    Yes. The chain is 16 inches with a 2 inch extender, so the stone can sit a little lower when you want more room.

    Does the necklace promise any effect?

    No. Black onyx is often associated with strength and focus, and those meanings are yours to choose. The necklace makes no promise of a particular outcome.

    Can I wear it in the shower or pool?

    Please remove it before swimming, showering or exercise. Chlorine, lotion and sweat can dull the stone and the gold surface.

    How should I clean it?

    Wipe gently with a soft dry cloth. Avoid harsh polishes and ultrasonic cleaners, which can damage the black onyx.

    Is this a birthstone?

    Black onyx is the December birthstone, so the necklace suits anyone born that month. The stone is the same whatever the birth month.

    A round faceted black onyx pendant hangs between yellow gold chain links on a pale gray background.
    Material Black onyx Selected option 10kt Solid Yellow Gold