Onyx Tennis Bracelet 4mm
Onyx Tennis Bracelet 4mm
The Onyx Tennis Bracelet 4mm is a black tennis bracelet for men: one unbroken line of onyx-black cubic zirconia, round brilliant-cut and set stone by stone in rhodium-plated prongs, closing with a box clasp and a double safety latch. Black stone against white metal gives the black diamond look for $69, and it is the highest-contrast bracelet in the line.
Black onyx has been the stone of men's jewelry for a century: signet rings, cufflinks, the studs on a tuxedo shirt. It signals restraint rather than flash, which is exactly why it works on a man's wrist. Black stones do not throw rainbow fire the way clear ones do; they flash as mirror-bright points, each one outlined by its own white prong, so the line reads as a clean pattern of black and silver from across a room.
No guessing on size. Many shops sell tennis bracelets by chain length and leave the math to you; Caligio sizes are wrist sizes with the fit already built in. Small fits wrists up to 6.8 inches, Medium up to 7.2, Large up to 8. Medium fits most men, which also makes it an easy gift.
Care for it like fine jewelry: off before the shower, the pool, and the gym, on after perfume and lotion, and the black stays glossy and the rhodium bright. Nickel-free and lead-free, gift-boxed, designed in Los Angeles. It also comes in gold and in all black, the clear-stone version is the Ice Tennis Bracelet 4mm, and the full line lives in the Tennis Bracelet collection.
Check more in: Tennis Bracelets Collection
The Onyx Tennis Bracelet 4mm is a black tennis bracelet for men: one unbroken line of onyx-black cubic zirconia, round brilliant-cut and set stone by stone in rhodium-plated prongs, closing with a box clasp and a double safety latch. Black stone against white metal gives the black diamond look for $69, and it is the highest-contrast bracelet in the line.
Black onyx has been the stone of men's jewelry for a century: signet rings, cufflinks, the studs on a tuxedo shirt. It signals restraint rather than flash, which is exactly why it works on a man's wrist. Black stones do not throw rainbow fire the way clear ones do; they flash as mirror-bright points, each one outlined by its own white prong, so the line reads as a clean pattern of black and silver from across a room.
No guessing on size. Many shops sell tennis bracelets by chain length and leave the math to you; Caligio sizes are wrist sizes with the fit already built in. Small fits wrists up to 6.8 inches, Medium up to 7.2, Large up to 8. Medium fits most men, which also makes it an easy gift.
Care for it like fine jewelry: off before the shower, the pool, and the gym, on after perfume and lotion, and the black stays glossy and the rhodium bright. Nickel-free and lead-free, gift-boxed, designed in Los Angeles. It also comes in gold and in all black, the clear-stone version is the Ice Tennis Bracelet 4mm, and the full line lives in the Tennis Bracelet collection.
How black stones catch light
A clear stone sparkles because light passes through it and breaks into color. A black stone works differently: almost no light gets through, so it shines from the surface instead, the way polished obsidian or a black car hood does. Each facet throws back a hard, mirror-bright point of white. Set in rhodium-plated prongs, every black stone is outlined by its own frame of bright metal, and the line reads as a precise black-and-silver pattern rather than a blur of sparkle. It is the most graphic tennis bracelet you can wear.
The black diamond look, stated honestly
The stones are black cubic zirconia, lab-created and cut with round brilliant facets. Natural black diamonds are rare and priced accordingly, and black onyx is a softer stone usually cut into beads rather than set in a tennis line. This bracelet borrows their color without their price or their fragility: harder than onyx, $69, and it says so on the page.
The clasp is the security
A tennis bracelet has nothing to catch it if the closure fails: no safety chain, no elastic, no cord. This one closes with a box clasp and a double safety latch. The tongue clicks into the box, then two side levers fold down over the join and lock it a second time. It opens only with a deliberate press on the levers.
Where it sits in your rotation
Black stones go with everything dark: a black strap, a steel watch with a black dial, charcoal, black denim, a white T-shirt for contrast. It also works under a suit cuff better than any colored stone. If your watch is gold, the Onyx Tennis Bracelet 4mm Gold sets the same stones in gold; for a fully blacked-out line, the Onyx Tennis Bracelet 4mm Black. The full line lives in the Tennis Bracelet collection.
Designed in Los Angeles since 2020. Ships gift-boxed.
| Product | Onyx Tennis Bracelet 4mm - black tennis bracelet for men |
| Type | Tennis bracelet, one continuous line of stones with no centerpiece |
| Stones | Onyx-black round brilliant-cut cubic zirconia, one per setting |
| Not a gemstone | Onyx is the color. The stones are lab-created CZ, not onyx or black diamond |
| Setting | Rhodium-plated prong setting, each stone outlined by its own frame |
| Metal | Brass base with rhodium plating, the white finish used on white gold jewelry |
| Skin-friendly | Nickel-free and lead-free |
| Width | 4mm, the classic men's tennis bracelet width |
| Clasp | Box clasp with a double safety latch. Two side levers lock over the join |
| Sizes | Small, wrists up to 6.8 in. Medium, up to 7.2 in. Large, up to 8 in |
| No guessing | Sizes are by wrist, not bracelet length. Measure the wrist and choose, nothing to add |
| Best-fitting size | Medium fits most men. Small fits most women |
| Everyday care | Take it off before the shower, the pool, and the gym to keep the finish bright |
| Wears with | Black strap, black-dial steel watch, charcoal, black denim, suits |
| Also in | Gold and all black |
| Collection | Tennis Bracelets |
| Designed in | Los Angeles, California |
| Packaging | Gift box with Caligio pouch bag |
Care for it like fine jewelry
The band is brass finished with rhodium, the bright white plating used on white gold rings and watches. Plating stays brightest when it stays dry, so the one habit worth building is simple: take the bracelet off before the shower, the pool, and the gym, and put it on after perfume, lotion, and sunscreen. Two seconds a day keep the rhodium bright and the black glossy.
Keeping the black glossy
Black stones shine from the surface, so what dulls them is anything that sits on the surface: fingerprints, skin oil, and lotion film. Unlike clear stones, black ones show a smear as a matte patch rather than hiding it. A quick wipe with a dry, lint-free cloth restores the mirror finish in seconds, and it is the only cleaning this bracelet usually needs.
The clasp
The box clasp and its two side levers are the only moving parts. Press the tongue in until you feel the click, then fold both levers down flat. To open, lift the levers and release the tongue instead of pulling on the stone line.
Care
- Take it off before the shower, the pool, the gym, and the beach.
- Put it on last, after perfume, lotion, and sunscreen.
- Wipe with a dry, soft, lint-free cloth. No polishing pastes or silver dips, which can strip the plating.
- If it gets wet, pat it dry right away.
- Avoid ultrasonic cleaners, which can loosen a prong.
- Close the clasp before storing, and keep it in the Caligio pouch bag, away from other pieces.
Skin
The bracelet is nickel-free and lead-free, the two metals most often behind jewelry reactions. Keeping it dry also keeps the plating intact over the brass base, which is what keeps it comfortable on the skin.
What is a black tennis bracelet?
A tennis bracelet set with one continuous line of black stones instead of clear ones. This one uses round brilliant-cut onyx-black cubic zirconia in rhodium-plated prongs on a 4mm band, so it gives the black diamond look at $69.
Are these black diamonds or real onyx?
Neither. Onyx is the color; the stones are lab-created black cubic zirconia. Natural black diamonds are rare and costly, and real onyx is a softer stone usually made into beads. Black cubic zirconia is harder than onyx and holds a glossy surface, which suits a bracelet worn every day.
Can men wear a black tennis bracelet?
It is the most natural tennis bracelet for a man. Black onyx has been the stone of men's jewelry for a century, from signet rings to cufflinks to tuxedo studs, because it reads as restraint rather than flash. At 4mm the line holds proportion on a man's wrist.
Do black stones sparkle?
Differently from clear ones. Almost no light passes through a black stone, so instead of rainbow fire it throws back hard, mirror-bright points from its facets. Set in bright prongs, the line reads as a crisp black-and-silver pattern, more graphic than sparkly.
What goes with a black tennis bracelet?
Everything dark: a black leather strap, a steel watch with a black dial, charcoal, black denim, and a suit. Against a white T-shirt it gives the strongest contrast. It is also the tennis bracelet that sits most correctly under a shirt cuff.
Silver, gold, or all black?
Silver is the high-contrast version: black stones outlined in white metal, for a steel watch. Gold sets the same stones in warm yellow for a gold watch. All black puts black stones on a black band, the stealth version that reads as one dark line. Same 4mm width, same clasp.
What size tennis bracelet should I get?
Choose by wrist, not by bracelet length. Caligio sizes already include the fit: Small is for wrists up to 6.8 inches, Medium up to 7.2, Large up to 8. There is nothing to add or guess. Medium fits most men, Small fits most women.
Will a tennis bracelet fall off?
A tennis bracelet has no safety chain, so the clasp does all the work, and this one locks twice. The tongue clicks into a box clasp, then two side levers fold over the join as a double safety latch. It opens only with a deliberate press.
Can I shower with it on?
Better not. Like most fine plated jewelry, it keeps its finish longest when it stays dry, so take it off before the shower, the pool, and the gym. It is a two-second habit that keeps the rhodium bright and the black glossy for years.
Will it turn my wrist green?
Not while the plating is intact. Green marks come from bare brass or copper touching skin, and here the brass is sealed under a rhodium layer. The bracelet is also nickel-free and lead-free. Keeping it dry and off lotion is what keeps that layer intact.
Is a black tennis bracelet formal enough for a suit?
Yes, more than any colored stone. Black is the color of formal menswear, from the tuxedo to onyx dress studs, so a black line under a shirt cuff reads as deliberate rather than decorative. Keep the watch to steel with a black or white dial.
Why is it called a tennis bracelet?
From the 1987 US Open, where American player Chris Evert's diamond line bracelet came off mid-match and play was paused while she recovered it. Until then the style was called an eternity or line bracelet, and the press renamed it for good.
Is it a good gift?
One of the safest for a man, because black goes with everything he already owns. The sizes are by wrist, so a rough idea of his wrist is enough, Medium fits most men, and it arrives in a Caligio gift box ready to hand over.
To define the correct sizing of your wrist, we highly recommend using a tape measure and measuring the circumference of your wrist just above the hand. However, if you do not have a special measure, use a small piece of tape or a cord. Wrap it around your wrist and measure the length against a ruler.
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Wrist size inch / cm |
| SMALL |
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6.7 - 7.1 inch / 17-18 cm |
| LARGE |
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Need XL? Check our XL Collection
Plenty of Caligio’s Cuff bracelets are adjustable and comfortably fit most of the standard wrist sizes. Slip-on cuff bracelets sizes are easily increased and decreased with bare hands. Keep in mind that the wrist size is not the same as the length of a bracelet. Still, need help? Email us at: support@caligio.com.
Calligio provides a FREE Standard Shipping delivery for all US orders above $50. International customers from countries/regions including Canada, United Kingdom, Europe and Australia get a free delivery starting from $150 orders.
Your orders are picked, packed, and shipped the same day from Los Angeles, California. The products ordered after 2PM PST are shipped the very next working day. The shipping department is on duty Monday through Saturday, excluding holidays.
Once your order has been processed, you will receive an email with your tracking number that allows you to check the order’s location. You have up to 2 hours after placing an order to request editing or canceling the order by writing to email support@caligio.com
Make sure to pick up your order in time to avoid any negative carry-outs after the product is delivered, as Caligio doesn’t take any responsibilities for orders after the status changes to Delivered. However, if you are worried about your orders getting wrongly delivered or stolen - opt for Standard Delivery + Priority Processing & Shipping Insurance for just $9.99 US only to secure a free replacement for all unreceived products.
Please note that the below-mentioned delivery timings are taken from the official websites of the delivery providers and may vary depending on the carriers delivery speed. International orders may be applicable for local taxes on top of the delivery costs.
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$5.99 | 3-5 Business Days |
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$9.99 | 1-3 Business Days |
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US -USPS Standard Delivery + Priority Processing & Shipping Insurance. |
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3-5 Business Days |
| Canada - Standard Delivery | $19.99 | 7-18 Business Days |
| Europe - Standard Delivery | $19.99 | 7-18 Business Days |
| UK & Ireland - Standard Delivery | $19.99 | 7-18 Business Days |
| Australia - Standard Delivery | $19.99 | 7-18 Business Days |
Please note, sometimes delivery providers may come up with a shipment delay due to the restrictions issued by countries' governments in these challenging times. Therefore, there may be cases when the package arrives several days after you receive a delivery notification.
If you ordered the wrong size, color, or simply would like to return the product, you can do so within 30 days from the delivery date. To be eligible, the item must be unworn and in its original packaging, free from any odors (deodorant, perfume), stains, or signs of wear. The original gift box and velvet pouch must be included - returns without original packaging will not be accepted. Please note that a $9.99 shipping and handling fee applies to all domestic returns and will be deducted from the amount refunded.
Once your return is approved, please send the item(s) back within 7 days.
For exchanges within the US, your first exchange is completely free and will be dispatched within 5 business days after we receive and inspect the item. Subsequent exchanges are at the customer's expense.
For international customers, returns and exchanges are handled on a case-by-case basis. Due to the complexity of international shipping, please contact us at support@caligio.com and our team will guide you through the process and find the best solution for you.
We do not process returns or refunds for final sale(special price) items, bundles, Buy 2 Get 1 Free offers, or promotional deals with discounts of 20% or more.
For any questions, contact us at support@caligio.com.
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