Celtic Black Onyx Couples Ring Set

Q: Is this sold as a matching set?

Yes, it is a three-piece his and hers couples set, and each ring can also be purchased separately.

Q: Is this good for a gothic or Celtic wedding?

Yes, the Celtic knotwork and deep black onyx make it a favorite for gothic and Celtic-inspired weddings, alternative engagements, and promise rings.

Q: What are the band widths?

His band is 8 mm and her rings are 1.5 to 1.6 mm each.

$275.00

Unit price: per

Ready to ship — FREE delivery Wed, Sep 30 – Mon, Oct 5

Need it faster? 2-day & overnight at checkout.

Quantity

His Ring Size

Her Ring Size

Add engravingComplimentary $35 value

Shipping calculated at checkout.

Size Chart

Find your ring size

Print at 100% / Actual Size — turn off "fit to page" or scaling.
Check the printed ruler measures exactly 80 mm.

Method A — Measure a ring

Lay a ring you own over the circles. The matching circle is your size.

Method B — Finger strip

Cut out the strip, wrap it around your finger, thread the end through the slit, and read your size.

Open the printable sizer (PDF)

1. Calibrate your screen — pick a reference object, hold it against the outline, and drag until the widths match exactly. On a phone, a coin is easiest — a card is often wider than the screen.

Bank card — hold vertically

2. Match a ring you own — drag until the circle fits just inside one of your rings.

US 6 · 16.5 mm · UK L½ · EU 52

This on-screen tool is a close guide, not a guaranteed exact fit. For certainty, order a ring sizer.

US	Diameter	Circumf.	UK/AU/IE	EU

UK, Australia & Ireland share the letter system. European sizes are approximate conversions.

In Stock Free Delivery Est. Oct 5

Product Description

Deep, protective black and the endless line of a Celtic knot, worn on two hands. This Celtic black onyx couples ring set pairs a pear-cut onyx ring for her with a crushed-onyx tungsten band for him — a his-and-hers pairing for couples drawn to the dark, the romantic, and the ancient.

Natural black onyx Pear cut Celtic knotwork Three-piece set Sterling silver + tungsten His & hers

Two rings, one love story

Some couples are made for candlelight and cathedrals rather than daylight and diamonds. This set is for them. Her pear-cut onyx ring and his crushed-onyx band are designed to be worn together — one of the most striking pairings in our collection of dark romance couple rings — yet each stands beautifully on its own as an engagement ring, a wedding band, or a promise. If you are still weighing options, our guide to the best matching rings for couples in 2026 is a lovely place to start.

Her Rings

Solid 925 sterling silver in a bright rhodium finish, hand-set with a pear-cut natural black onyx (approx. 6 x 8 mm, 1.5 ct) framed by cubic-zirconia accents, with a matching Celtic-knot band. Slim 1.5–1.6 mm each.

His Ring

An 8 mm comfort-fit tungsten carbide band inlaid with crushed natural black onyx — deep, matte, and quietly powerful.

The black onyx

Black onyx is a natural stone with a deep, glassy luster, long associated with strength, protection, and resilience — a fitting emblem for two lives intertwined. You can read its full story in our black onyx meaning guide. Here the center is a pear-cut natural onyx, hand-set for that saturated midnight depth, with brilliant cubic-zirconia accents catching the light around it.

Celtic knotwork

Woven through the set is Celtic knotwork — a line with no beginning and no end, an ancient symbol of eternal love and unity. It is the heart of what makes this one of our favorite gothic couple rings, and part of a wider world of gemstone couples rings designed to be worn as a pair.

Metals & everyday wear

Her ring is solid 925 sterling silver finished in rhodium for a crisp, white-gold look; his is tungsten carbide, one of the hardest, most scratch-resistant metals in fine jewelry, with a comfort-fit interior. Both are hypoallergenic and nickel-free, and her ring can be upgraded to solid gold on request.

Specifications

Set Three-piece his & hers couples ring set (her ring + her band + his ring)
Her metal Solid 925 sterling silver, rhodium finish, Celtic knotwork
Center stone Natural black onyx, pear cut, 6 x 8 mm (approx. 1.5 ct)
Accents Cubic zirconia
His metal Tungsten carbide, comfort fit
His inlay Crushed natural black onyx
Band widths 8 mm (his) · 1.5–1.6 mm (hers)
Finish High polish / rhodium plated

Sizing & care

Each ring is made to order in your exact sizes and is hypoallergenic and nickel-free. Wipe clean with a soft cloth and store dry to keep the onyx lustrous. Every order arrives in a free luxury velvet ring box with free U.S. shipping, conflict-free stones, and a lifetime warranty — so it is ready to gift or propose with the moment it lands.

Frequently asked questions

Is this sold as a matching set?

Yes — it is a three-piece his & hers couples set, and each ring can also be purchased separately.

Is the black onyx natural?

Yes, the pear-cut center and his inlay are natural black onyx, chosen for its deep, glassy luster. The sparkling accents around it are cubic zirconia.

What does the Celtic knotwork mean?

Celtic knots have no beginning and no end, symbolizing eternal love and unity — a fitting motif for a couples ring set.

What does black onyx symbolize?

Black onyx is associated with strength, protection, and resilience, making it a meaningful choice for a lasting partnership.

What is on the men's band?

His 8 mm tungsten band is inlaid with crushed natural black onyx for a deep, matte, powerful look.

What metals are used?

Her ring is solid 925 sterling silver with a rhodium finish; his is tungsten carbide. Both are hypoallergenic and nickel-free, and her ring can be made in solid gold on request.

Is this good for a gothic or Celtic wedding?

Yes — the Celtic knotwork and deep black onyx make it a favorite for gothic and Celtic-inspired weddings, alternative engagements, and promise rings.

What are the band widths?

His band is 8 mm and her rings are 1.5–1.6 mm each.

What comes with my order?

A free luxury velvet ring box, free U.S. shipping, conflict-free stones, and a lifetime warranty.

Properties of Black Onyx

Shipping & Delivery

Engraving

QUICK ADD ON:

Night Court handmade leather book ring box in black and gold by Aquamarise with embossed cover design

Night Court Handmade Leather Book Ring Box – Black & Gold Edition (Small)

$79.99

Need help? Contact us.

Shop the Look

Black Onyx Wedding Band in Tungsten Carbide (8mm) displayed beside an ornate silver ring with black and clear gemstones on a smooth gray stone by Aquamarise.

Free US shipping

Free ring box

Free size exchanges

Ethically sourced

Free U.S. Shipping + Worldwide Delivery

Ethically Sourced Gemstones

Handcrafted by Aquamarise®

Complimentary Engraving on Every Order

Free U.S. Shipping + Worldwide Delivery

Ethically Sourced Gemstones

Handcrafted by Aquamarise®

Complimentary Engraving on Every Order

What Makes Aquamarise® Different

Two rings with blue stones on a gray stone surface

Ethically Sourced, Always

Each gemstone is meticulously hand-selected for its brilliance and clarity, responsibly sourced from trusted partners around the world.

Built to Be Worn, Not Just Admired

Every piece is expertly crafted and finished to endure daily wear, combining lasting strength with enduring beauty beyond the display case.

Specifically Designed for You

Every Aquamarise® creation is thoughtfully designed for those who view jewelry as a personal expression. Never mass-produced, each piece carries a sense of meaning and individuality.

Crafted to Last. Not Just Sparkle.

While most jewellers focus on appearance, Aquamarise® focuses on craftsmanship, durability, and pieces you will treasure forever.

		Others
Premium Materials
Personalized Engraving
Craftsmanship Guarantee
Ethically Sourced Gemstones
Luxury Gift Packaging

Other rings you'll love

Sale

Skye Kite® Green Moss Agate Engagement Ring Set in 14K White Gold by Aquamarise Gold featuring a kite-cut moss agate with sparkling diamond accents on a delicate white gold band.

Skye Kite® Green Moss Agate Ring in Sterling Silver

from $135

Sale

Aquamarine & Moonstone Fairy Leaf Ring Set- Sterling Silver featuring an ice-blue aquamarine center stone with delicate moonstone accents in a nature-inspired sterling silver design by Aquamarise.

Aquamarine & Moonstone Fairy Leaf Ring Set in Sterling Silver

from $150

Sale

Skye Kite® Natural Herkimer Diamond Engagement Ring Set in 14K White Gold (Salt & Pepper Diamond) by Aquamarise Gold, featuring a kite-cut salt and pepper diamond with sparkling white gold accents.

Skye Kite® Galaxy Raw Herkimer Diamond Ring Set in Sterling Silver (Salt & Pepper Diamond)

from $150

Sale

A sterling silver engagement ring set featuring a round-cut blue goldstone center stone with a crescent moon-inspired band, displayed against a purple background.

Starry Night® Crescent Moon Engagement Ring Set in Sterling Silver

from $150

5 stars: 33 (94%)
4 stars: 2 (6%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

I forgot to include the font I wanted, so I messaged them, and they responded so quickly. It came in quickly and it’s so beautiful my husband and I love it so much we just got married yesterday so I get to finally leave my review and show my photos of our rings 💕

I’m sorry

I’m sorry. I previously said my ring wasn’t inscribed with forever andalways, but it does. We love our rings!!!!

We’re so glad to hear you and your partner love your rings! Thank you for the update, and we appreciate your support! Enjoy wearing them! ✨

BEST ENGAGEMENT RING EVER!

I received it within a week and both rings are perfect. We can't wait to match. I will definitely be returning for more jewelry in the future. We even got a 10% off discount code for our next order as a thanks. Its the perfect size and is real quality jewelry. The actual jewelry is even more beautiful than the photos.

We’re overjoyed that you consider it the best engagement ring ever! Thank you for your kind words and for choosing us! ✨

Beautiful rings. I needed to exchange original rings for a different size and seller had no problem accommodating.

Beautiful quality and beautiful rings

Wonderful ring...even if I got it only to break up the day after I proposed. I'm holding onto them because they're so pretty.

Just as pictured and arrived early :) super happy with our rings, they’re beautifully crafted and great material 🤍

Couldn't be more happier with the purchase. These rings are our wedding rings for our May wedding.

The rings are absolutely stunning!

My partner and is got these as promise rings. I knew I was ordering close to Valentine’s Day and fully expected to get them after the holiday but the seller shipped them to me in three days!! So we have them for the holiday now. The rights are great quality, true to size, comfortable and so beautiful!!

I got these rings as a promise ring set for my partner and myself and I’m beyond pleased. The black onyx is stunning in both pieces. The men’s ring almost seems boring in comparison until you get it in the mail and in the light and realize - ITS SPARKLY! They really are just beautiful. Shipped before I expected and came in really pretty purple packaging. I planned to save them for Valentine’s Day but I was just so obsessed I couldn’t wait and we put them on the day they got here.

Este par de anillos es increíble, nos encanto, es hermoso y se siente de muy buena calidad. El servicio de envío fue muy rápido y los vendedores se portaron muy amables.

Above and beyond customer service, exquisite rings and speedy shipping! Absolutely recommend this seller! Thank you!

We're thrilled you love the rings and appreciate your kind words. Come back anytime!

LOVE IT

LOVE IT, TRUE TOO DESCRITION ANF IMAGE

Perfect

Perfect

Beautiful

The rings are beautiful, fast delivery to Slovenia. Now my fiance is amazed. It was a great choice.

Thank you so much for your kind words! We’re truly grateful and honored to be part of your special journey.

Everything i wanted it to be

Everything i thought it would be

Everything i thought it would be 🫶🏻🖤🤌🏻

Beautiful rings

Beautiful rings. Very simple yet they do grab the eye in my opinion.

We're so glad to hear that you find the rings beautiful and eye-catching! Thank you for sharing your thoughts with us! Enjoy wearing them! ✨

These rings were the perfect anniversary/birthday gift for my husband and I! They fit perfectly and look beautiful!

We’re thrilled to hear that the rings made the perfect gift for your anniversary and birthday! It’s wonderful that they fit well and look beautiful. Thank you for sharing your experience! ✨

So beautiful, my bf loved it 🫶

I am so happy they are as beautiful as they are in the pictures , and they were so affordable, I’m thinking of just buying myself one for my next gift to myself . 🥰

We're thrilled to hear that the rings are just as beautiful as you expected! It's wonderful that you're considering treating yourself as well. Thank you for your lovely feedback!

Gf loves it

Beautiful rings. I needed a resize for one of the rings and it was very easy. Customer service was phenomenal. I highly recommend. 😊

Very nice rings, my girlfriend loved hers

Your cart

Your cart is empty