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    A yellow gold necklace with a black triangular pendant is centered on a light gray background.
    An angled close-up shows the polished gold setting, circular clasp, and glossy black stone on a pale surface.
    The black triangular pendant hangs at an angle against a clean textured pale surface.
    A circular gold clasp and a horizontal bar sit above the open triangular pendant setting.
    A close-up reveals the black stone facets and two small gold prongs near the pointed tip.
    A woman in an ivory linen blouse wears a gold necklace with a black triangular pendant in a leafy courtyard.
    A woman in a dark teal blouse wears the black triangular pendant necklace beside a sunlit cafe window.

    A yellow gold necklace with a black triangular pendant is centered on a light gray background.

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    Vow

    Strength Vow Black Obsidian Necklace

    $169.00
    Strength Black obsidian Daily ritual
    Choose your Metal finish

    Metal finish: 18kt Yellow Gold Vermeil

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

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    Quality & details
    A triangle-shaped step-cut black obsidian pendant of about 15 by 11 millimeters and 3.30 carats on a 20 inch chain, in 18kt yellow gold vermeil over sterling silver.
    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 Obsidian

    Black Obsidian
    • Black Obsidian texture
    • Black Obsidian tone
    • Personal meaning

    Representative material visualization · Appearance may vary

    Black Obsidian is a natural material selected for its slate visual character. Surface, color and pattern can vary with the cut, finish and individual piece; the product photographs and measurements describe the item you will receive.

    In this piece: a triangle-shaped step-cut black obsidian, about 15 by 11 millimeters, as the pendant.

    What does black obsidian symbolize?

    In crystal and jewelry traditions, black obsidian is associated with reflection, intention and personal style. These meanings are cultural and personal; they are not medical benefits or promises.

    Will every black obsidian piece look the same?

    No. Variation can come 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.

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    Crafted materials

    Sterling Silver

    Sterling Silver
    • 925 silver
    • Silver alloy
    • Gentle care

    Representative material visualization · Appearance may vary

    Sterling silver is a silver alloy used in jewelry. Its bright, cool-toned surface can develop a natural patina with wear and exposure. The visible finish may also be plated, so always check the metal option for the individual piece.

    In this piece: 925 sterling silver with an 18kt gold vermeil finish, for the pendant frame and chain.

    Is sterling silver the same as a silver-colored finish?

    No. A silver-colored appearance alone does not establish metal content. Use the product's confirmed material specification; never identify sterling silver from its color or a reference photograph.

    Can sterling silver have a gold-colored finish?

    Yes. A gold layer can be applied over a sterling-silver base. In a vermeil option, the base metal and surface finish should both be stated; it must not be described as solid gold.

    How should I care for the finish?

    Store jewelry dry and separately, avoid cosmetics and household chemicals, and use a soft cloth. Follow the product's own care instructions before using silver cleaner, especially when stones, thread or gold plating are present.

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    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 an ivory linen blouse wears a gold necklace with a black triangular pendant in a leafy courtyard.
    Vow triangle-cut black obsidian necklace

    Dark and upright

    A triangle step-cut black obsidian with a clean outline

    A triangle-shaped step-cut black obsidian of about 15 by 11 millimeters on a 20 inch chain.

    Vow holds a triangle-shaped step-cut black obsidian of about 15 by 11 millimeters at the front of the pendant. The step cut lays the glossy dark surface out in clean bands, and the points of the triangle give the pendant a firm, upright outline.

    The stone weighs about 3.30 carats, a size that makes a strong, steady statement at the neckline. Black obsidian is a natural volcanic glass, so its gloss varies a little from one stone to another.

    Vow suits dark knitwear, tailored jackets and simple evening dresses. Its dark face and clean lines look bold by day and composed in the evening.

    An angled close-up shows the polished gold setting, circular clasp, and glossy black stone on a pale surface.
    Vow necklace worn at the neck

    Light and steady

    A long chain that lets the pendant find its place

    A 20 inch chain with about 2.75 grams of metal in a pendant that rests lightly.

    The chain is 20 inches long, a length that lets the triangle pendant rest on the chest or fall lower over a shirt. The pendant is about 25.95 by 13.80 millimeters, so it sits in clear view without feeling heavy.

    The metal weighs about 2.75 grams, a comfortable weight for everyday wear. The 18kt yellow gold vermeil finish gives the frame a warm, golden edge that complements the dark stone.

    The meaning of strength

    Black obsidian is often associated with strength, the steady inner resolve that helps a person keep their footing through a demanding stretch. Its dark, smooth face has long been linked with resilience and a calm, grounded way of meeting challenges, so Vow suits anyone who values quiet determination. The meaning is yours to choose, and the necklace makes no promise of a particular result.

    Some people give a black obsidian pendant to a friend who has faced a hard season and kept going. Others wear one as a private reminder to stay steady when the week asks more than expected.

    Choosing your length

    The chain is 20 inches long. Measure a necklace you already wear and check where its pendant sits before you decide, so you can choose the position that suits your neckline.

    A longer chain lets the triangle sit lower on the chest, while a shorter wear keeps it close to the collarbone. Try it on in a mirror before you order.

    Caring for the obsidian and finish

    Black obsidian can chip under hard knocks, and lotion, perfume, heat and chlorine can dull the glossy surface and the vermeil. 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 step-cut face and the finish, so the obsidian keeps its deep gloss.

    Find your metal tone

    One finish for this necklace: 18kt yellow gold vermeil over sterling silver, framing the triangle black obsidian pendant.

    Yellow gold vermeil

    Warm 18kt yellow gold vermeil over sterling silver that frames the triangle black obsidian in a golden setting.

    A yellow gold necklace with a black triangular pendant is centered on a light gray background.
    18kt Yellow Gold Vermeil · necklace with triangular black pendant
    An angled close-up shows the polished gold setting, circular clasp, and glossy black stone on a pale surface.
    18kt Yellow Gold Vermeil · angled setting and clasp detail
    The black triangular pendant hangs at an angle against a clean textured pale surface.
    18kt Yellow Gold Vermeil · pendant shown at an angle
    A circular gold clasp and a horizontal bar sit above the open triangular pendant setting.
    18kt Yellow Gold Vermeil · circular clasp and bar detail
    A close-up reveals the black stone facets and two small gold prongs near the pointed tip.
    18kt Yellow Gold Vermeil · black stone facets and prongs
    A woman in an ivory linen blouse wears a gold necklace with a black triangular pendant in a leafy courtyard.
    18kt Yellow Gold Vermeil · shown with an ivory blouse in a courtyard
    A woman in a dark teal blouse wears the black triangular pendant necklace beside a sunlit cafe window.
    18kt Yellow Gold Vermeil · shown beside a cafe window

    Size & materials

    Main stone
    Triangle-shaped step-cut black obsidian, about 15 x 11 mm
    Stone weight
    About 3.30 ct
    Pendant size
    About 25.95 x 13.80 mm
    Chain length
    20 inches
    Metal options
    18kt yellow gold vermeil
    Metal weight
    About 2.75 g
    Included
    One necklace in the gold vermeil finish

    Frequently asked questions

    Is the black obsidian natural?

    Yes. Black obsidian is a natural volcanic glass, and its gloss varies a little from one stone to another.

    How does the clasp work?

    The chain closes with a secure clasp that is simple to fasten and unfasten. The necklace is 20 inches long.

    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.

    Is the finish solid gold?

    No. The finish is 18kt yellow gold vermeil over sterling silver, a thin gold layer rather than solid gold.

    Does the necklace promise any effect?

    No. Black obsidian is often associated with strength, and that meaning is 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. Water, lotion and chlorine can dull the obsidian and the vermeil finish.

    How should I clean it?

    Wipe gently with a soft dry cloth. Avoid harsh polishes and ultrasonic cleaners, which can damage the glossy surface and the finish.

    Can I adjust how the pendant sits?

    The chain is 20 inches long, so you can choose where the pendant rests on the neckline or wear it lower over a shirt.

    A yellow gold necklace with a black triangular pendant is centered on a light gray background.
    Material Black obsidian Selected option 18kt Yellow Gold Vermeil