Clover Collection
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.
About ONTOO
Born from Martina Baeriswyl-Holzach’s lifelong passion for fine jewelry and fashion, ONTOO blends timeless design with modern versatility. Raised in Argentina with Swiss roots, Martina was inspired by her mother’s collection of antique jewelry and gemstones — a love that grew into a vision for everyday luxury.
Every ONTOO piece reflects her belief that true elegance is effortless, versatile, and lived. From refined jewelry to sophisticated fashion, the brand celebrates individuality and a lifestyle of comfort and timeless beauty.
Iconic Collection
Infinity Collection
Flower Collection
Clover Collection
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!
FAQs
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
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!
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.