Infinity Collection
A refined expression of ONTOO’s signature style, the Infinity collection blends timeless elegance with sensual simplicity. Crafted in rose gold with elongated oval forms and gemstone accents, each piece is designed for enduring beauty and everyday comfort.
“Our Infinity collection reflects the heart of ONTOO—simplicity, longevity, and versatility,” says founder Martina. “It’s made to elevate both the everyday and the extraordinary.”
Available in a curated selection of rings, bracelets, necklaces, and hoops—customizable or ready to wear. Discover effortless luxury, wherever life takes you.
Unique design meets luxury jewellery
About ONTOO
Every ONTOO creation begins with a simple belief. The jewellery you wear should feel as personal as the life you have built.
Inspired by founder Martina Baeriswyl-Holzach's lifelong passion for fine jewellery and fashion, ONTOO was born from a love of timeless beauty. Growing up in Argentina with Swiss roots, Martina discovered the magic of exceptional craftsmanship through her mother's collection of antique jewellery and precious gemstones.
Today, that passion lives on in every piece. Designed to accompany you through every chapter of life, ONTOO jewellery combines timeless elegance with modern versatility. Each creation is made to become part of your story, reflecting your individuality, your confidence, and the beauty of living life on your own terms.
Diamonds Addiction
The Medium Zip-Flower Diamond Necklace in white gold redefines modern elegance with its sleek, delicate zip-flower motif adorned in shimmering pavé diamonds. Designed with an adjustable length, this versatile piece effortlessly adds a touch of refined luxury and subtle sparkle to any ensemble.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Medium Gold Flower Diamond Pavé Earrings. Featuring a versatile design with both clip-on and foldable stud options, these medium-sized gold flower earrings are adorned with sparkling diamond pavé detailing—perfect for comfort and elegance in one.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Gold Mini Flower Diamond Pavé Necklace. A stunning and delicate piece that adds a touch of everyday luxury and elegance to any occasion. Perfectly designed to complement both casual and special moments.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Customise Your ONTOO Piece
Luxury that adapts to you.
At ONTOO, we believe that jewellery should be as unique and multifaceted as the women who wear it. That’s why every ONTOO piece is designed with versatility and personalisation in mind — made to be added onto, layered, adapted, and elevated over time.
Iconic Collection
Infinity Collection
Flower Collection
Clover Collection
Leather Collection
FAQs
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All ONTOO pieces are crafted using 18k white, yellow, or rose gold. We work exclusively with real precious and semi-precious stones — including diamonds, topaz, amethyst, garnet, coral, and enamel — ensuring each piece reflects the highest standards of quality and craftsmanship.
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Our designs are created in our Zurich atelier by founder Martina Baeriswyl-Holzach. Each piece is then handcrafted in Istanbul by a trusted family-run workshop with generations of experience in fine jewellery. Final quality control takes place in Zurich before pieces are shipped to clients worldwide.
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We accept returns on non-customised items within 14 days of delivery, provided they are unworn and in original condition. Customised and bespoke pieces are non-returnable unless faulty. For more, visit our Returns & Exchanges page.
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Visits to our Zurich showroom are available by appointment. You’ll be able to see the collections up close and explore customisation options with personal guidance. Contact us here to book your visit.
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Absolutely. If you’d like to create a one-of-a-kind piece, we offer a bespoke design service. From engagement rings to meaningful gifts, we’ll work closely with you to bring your vision to life using the finest materials.
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Yes — customisation is at the heart of ONTOO. Most pieces can be personalised: choose your preferred gold tone, add or remove stones, and create modular combinations such as adding pendants or layering chains. Our team is happy to guide you through the options to create your perfect piece.
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We ship globally, directly from our headquarters in Zurich. Shipping fees and timelines vary based on destination and order value. For full details, please refer to our Shipping Policy.
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Customised or made-to-order pieces typically take 2–5weeks to complete. We will keep you informed throughout the process and provide estimated delivery dates upon confirmation.
Little Gold Iconic Necklace with Diamond Pavé. A refined piece from the ONTOO Iconic Collection, this delicate gold necklace features a small, iconic cross-inspired pendant adorned with shimmering diamond pavé. Understated yet radiant, it's the perfect everyday luxury — elegant worn alone or layered with other favorites.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Versatile 14K rose gold earrings celebrate modern luxury with a refined twist on the classic Greek cross. The set features a brilliant diamond stud paired with two detachable Iconic elements—wear the stud alone for minimalist elegance, or layer the Iconics for a bold statement. Available in smooth rose gold or accented with pavé diamonds, this sophisticated design effortlessly balances symbolic beauty, contemporary style, and timeless craftsmanship.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Available in two exquisite sizes, the Iconic Pendant in 18K rose gold defines modern luxury. The medium pendant (19.87 mm) offers a refined pavé setting of champagne or TTLB diamonds, while the larger Iconic Big Pendant (25.30 mm) dazzles with approximately 90 TTLB diamonds totaling 2.33 ct. Both sizes embody timeless sophistication and can be personalized—click ‘Customize’ to request a chain and complete your perfect necklace.
This piece is fully customizable — choose your preferred gold finish, gemstone, or add detachable elements to make it uniquely yours.
Click here to CUSTOMIZE!
Connect with our team and make your jewellery dreams come true!
Contact us.
+41 76 445 49 94
contact@ontoo.ch