Jewellery that becomes part of your story.
Designed in Zurich. Crafted to be worn, treasured, and passed on for generations.
ON+TOO
The name says it all.
"ON" represents the jewellery you already own. "TOO" is the next piece you choose to add.
ONTOO was created with the belief that a jewellery collection should evolve with you—growing over time through meaningful pieces chosen to celebrate life's moments.
Because the finest collections are never finished. They are simply added to.
The Founder
Meet Martina Baeriswyl, the founder and creative force behind ONTOO.
For Martina Baeriswyl, jewellery has always been more than an accessory. Inspired by her Swiss heritage, her mother's treasured collection, and years working with luxury brands, she founded ONTOO to create timeless pieces designed to become part of everyday life.
Our Philosophy
Luxury isn't something you save for special occasions.
It is something you live with every day.
Every ONTOO piece is designed to accompany life's quiet moments as beautifully as its celebrations.
Where it all started
ONTOO was born from a simple idea. The most beautiful jewellery should not be reserved for special occasions.
Martina wanted to create pieces that bring together timeless elegance, everyday comfort, and effortless versatility. Jewellery you reach for every morning, wear with confidence, and treasure for years to come.
The name ONTOO reflects that vision. You already have jewellery you love. ONTOO is designed to add to your collection with pieces that feel personal, meaningful, and made to become part of your story.
DNA
The ONTOO Woman
The ONTOO woman is cosmopolitan, confident, and effortlessly elegant. She values quality, individuality, and versatility — choosing jewellery that reflects her lifestyle and personal aesthetic. Whether navigating a busy workday, traveling the world, or enjoying an evening out, she wears her pieces like a second skin: refined, comfortable, and always true to herself. With ONTOO’s customizable designs, she can mix finishes, add elements, and create a collection that is uniquely her own.
Quality in Materials & Swiss Luxury Design
At the heart of ONTOO is a commitment to exceptional craftsmanship. Every piece is designed in Zurich by founder Martina Baeriswyl-Holzach and brought to life in collaboration with a family-run atelier in Istanbul, trusted for over a decade. Using 14 and 18 K white, yellow, or rose gold and hand-selected stones — from diamonds and topaz to amethyst, coral, garnet, and vibrant enamel — ONTOO blends Swiss precision with timeless luxury.
Customization with Purpose
ONTOO jewellery is designed to evolve with you. Each piece is thoughtfully created for versatility — add pendants, switch finishes, or combine elements to suit your mood or milestone. Earrings can transform with detachable drops, and long necklaces layer seamlessly or gain new accents over time. This philosophy defines our name: ON + TOO — jewellery you can always build upon, as unique and dynamic as the woman who wears it.
Collections
Iconic Collection
Infinity Collection
Flower Collection
Clover Collection
Leather Collection
"ONTOO is more than jewellery. It is a celebration of who you are.”
Every piece is designed to reflect your individuality, inspire confidence, and bring timeless elegance to your everyday life. Created to be worn, loved, and passed from one generation to the next, ONTOO jewellery is a lasting expression of your story, your style, and the moments that matter most.
A stunning 14k rose gold pendant featuring a 0.80 ct pink tourmaline accented by 1 ct of pavé diamonds at the center. Comes with a handmade 14k rose gold link chain, 47 cm in length — elegant and timeless.
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!
Crafted in 14k rose gold, the Infinity Ring features 12 oval-cut gemstones (1.60 ct total) set seamlessly around the band — available in Pink Tourmaline, Blue Topaz, or Citrine.
Designed for versatility and comfort, these rings are perfect for everyday wear. Stack them, pair them, or wear solo for a subtle yet refined statement. Elegant, timeless, and beautifully crafted to last.
Available in size 53/54. Custom sizing and gemstones available upon request. Customizable with white or yellow Gold, different Gemstones, Sapphires and Diamonds
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!
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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!
Contact us.
0041 76 445 49 94
contact@ontoo.ch