Sapphire Tennis Bracelet 4mm Black

Name: Sapphire Tennis Bracelet 4mm Black
Brand: CALIGIO
Price: 69.0 USD
Availability: InStock

$99 $69

Sapphire Tennis Bracelet 4mm Black

$99 $69

The Sapphire Tennis Bracelet 4mm Black is a sapphire bracelet for men in blue and black: one unbroken line of deep navy-blue cubic zirconia, round brilliant-cut and set stone by stone in gunmetal black-plated prongs, closing with a black box clasp and a double safety latch. It has the color of sapphire, but it is not sapphire: the stones are lab-created CZ in sapphire blue.

This is the stealth version of the line. In low light the deep blue almost disappears into the black band and the bracelet reads as one dark line; when the light catches it, the stones flash blue. That makes it a men's black tennis bracelet that works with a leather jacket, charcoal, black denim, and a black-cased watch, and still has color for those who look closely.

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, lotion, and sunscreen, and the black finish stays deep. Nickel-free and lead-free, gift-boxed, designed in Los Angeles. The same stones come in silver and gold. For black stones on a black band, see the Onyx Tennis Bracelet 4mm Black; the full line lives in the Tennis Bracelet collection.

Check more in: NEW 2026 Collection

Sapphire blue on a black band

The stones are lab-created cubic zirconia in sapphire blue, not natural sapphire, set in brass with a gunmetal black plating. Deep blue next to black is one of the quietest color pairs in the tennis line: from a distance the bracelet reads as a single dark line, and up close every stone shows its blue.

Why it suits a man who mostly wears black

A silver or gold tennis bracelet can look bright against an all-black outfit. This one does not. The black band blends with leather, charcoal, and black denim, and the sapphire blue adds just enough color to keep it from looking like hardware. It is a tennis bracelet for the man who thinks he does not wear jewelry.

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 black 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

Year-round, with black, charcoal, dark denim, a leather jacket, and a black-cased or matte watch. For a steel watch, the Sapphire Tennis Bracelet 4mm sets the same stones in rhodium; for a gold watch, the Sapphire Tennis Bracelet 4mm Gold. For black stones on black, see 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	Sapphire Tennis Bracelet 4mm Black - sapphire bracelet for men
Type	Tennis bracelet, one continuous line of stones with no centerpiece
Stones	Deep navy-blue round brilliant-cut cubic zirconia, one per setting
Not a gemstone	Sapphire is the color. The stones are lab-created CZ, not natural sapphire
Also called	Sapphire blue, navy blue, deep blue. Blue and black
Setting	Black-plated prong setting, each stone in its own link so the line flexes and lies flat
Metal	Brass base with gunmetal black plating
Skin-friendly	Nickel-free and lead-free
Width	4mm, the classic men's tennis bracelet width
Clasp	Black 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 black finish deep
Wears with	Black-cased watch, leather jacket, dark denim, charcoal, black. Year-round
Birthstone	Sapphire blue is the color of September
Black on black	Onyx Tennis Bracelet 4mm Black
Also in	Silver and gold
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 a gunmetal black plating. Plating keeps its depth longest 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 black deep and the blue bright.

Keeping the black deep

Black plating shows wear first at the edges that rub, usually the clasp and the back of the line. Wearing it on the wrist without a metal watch pressed against it, and wiping it with a dry, lint-free cloth after a long day, keeps the finish even for longer.

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 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 sapphire tennis bracelet in black?

A tennis bracelet with one continuous line of deep blue stones set on a black band. This one uses round brilliant-cut sapphire-blue cubic zirconia in gunmetal black-plated prongs, 4mm wide, so the blue sits against black instead of silver or gold.

Is it real sapphire?

No. Sapphire is the color; the stones are lab-created cubic zirconia, not natural sapphire. That keeps the deep blue identical from stone to stone across the whole line.

What is gunmetal black plating?

A dark grey-black metal finish applied over the brass base. It gives the band a deep, slightly metallic black instead of a flat painted look, and it keeps longest when the bracelet stays dry.

Does deep blue show up on a black band?

It shows when the light hits it. In shade the bracelet reads as one dark line, and in daylight or under a lamp each stone flashes sapphire blue. That changing effect is the point of this version.

Can men wear a blue and black bracelet?

Yes. Blue and black is one of the most understated color pairs a man can wear, and on a 4mm tennis line it looks deliberate rather than decorative. It suits men who rarely wear jewelry.

What goes with a blue and black bracelet?

Black, charcoal, dark denim, a leather jacket, and a black-cased or matte watch. It works all year and with both a t-shirt and a dark suit.

Black, silver, or gold?

Black is the stealth version, for dark clothes and matte watches. Silver sets the blue in bright rhodium for a steel watch. Gold warms it for a gold watch. Same 4mm width, same clasp.

Sapphire Black or Aquamarine Black?

Both sit on the same black band with the same clasp. Sapphire Black uses deep navy-blue stones that blend into the black until the light catches them. Aquamarine Black uses pale sea-blue stones that stand out clearly against the dark band.

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 black box clasp, then two side levers fold over the join as a double safety latch. It opens only with a deliberate press.

Will the black finish wear off?

Plating wears slowly, first where it rubs, such as the clasp and the back of the line. Keeping it dry, putting it on after lotion, and not wearing it pressed against a metal watch keeps the black even far longer.

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 black plating. The bracelet is also nickel-free and lead-free.

Is it a good gift?

Yes, especially for a man who mostly wears black, or for a September birthday, since sapphire blue is the color of that month. Medium fits most men, and it arrives in a Caligio gift box.

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.

Bracelet size	Wrist size inch / cm
SMALL	6.3 - 6.7 inch / 16-17 cm
MEDIUM	6.7 - 7.1 inch / 17-18 cm
LARGE	7.3 - 8 inch / 18 cm - 20.5 cm

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.

US - USPS Standard Delivery	$5.99	3-5 Business Days
US - USPS Priority Mail	$9.99	1-3 Business Days
US -USPS Standard Delivery + Priority Processing & Shipping Insurance.	$9.99	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.

Saw a similar box chain bracelet in a store for ten times what I paid here. This one is beautifully built and wears great. Needed a smaller size and the exchange was quick and painless - best jewelry I've bought for the money in a long time.

Luis M.

Purchased for my husband for our anniversary - he really liked it. The blue stingray leather looks so original, elegant, works with casual clothing or with a suit. And the size adjusts perfectly - it fits his wrist and even mine! Can safely recommend. These bracelets are gorgeous!

Alena M.

Received the item and boy is it cool. Thanks for the prompt delivery and great product. It looks great and classy. Very pleased with the product. I highly recommend Caligio.

Robert P.

Great combo of Gold & Black in one piece. I swear, I couldn’t believe it’s not two separate items up until the bracelet arrived. Wear it every day. Very happy customer.

James S.

This cuban link bracelet became my everyday piece. Looks way more expensive than $49, the clasp feels sturdy and the silver finish still shines after the gym. My wife keeps trying to steal it!

Steven K.

Ordered the turquoise for vacation and it's the color everyone asks about. The rope holds up in the ocean and the shackle clasp hasn't dulled once. Best forty bucks I've spent on an accessory!

Mike L.

Orange cotton bracelet gets more compliments than anything else I wear. Comfortable enough that I forget it's on, and the omega-shaped clasp is a nice detail. Solid quality for the money.

Daniel S.

Navy blue bracelet is the one I reach for daily. The screw clasp gives you about an extra size of room, so the fit is spot on, and the cotton rope is comfortable from day one. Best value I've found for the money.

Alex T.