Work directly with Sergio to design your custom engagement ring or fine jewellery piece — handcrafted in our Toronto studio using ethically sourced natural and lab-grown diamonds.
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Handcrafted jewellery isn't about following trends — it's about creating something that doesn't exist yet. Every piece Sergio makes is designed around you: your style, your stone, your story. No catalogue. No compromises.
At OROSERGIO, custom jewellery means working directly with a master goldsmith — not a salesperson, not a catalogue, and not a factory. Every piece is designed from scratch around the person who will wear it. Whether you're commissioning a custom engagement ring, a tennis bracelet, a toi et moi ring, or a one-of-a-kind pendant or pair of earrings — Sergio designs and handcrafts every piece of custom jewelry in our downtown Toronto studio.
With 30 years of bench experience and a proud membership in the Canadian Jewellers Association, Sergio brings old-world craftsmanship to modern design. There are no middlemen, no outsourced workshops, and no retail markups. You work with the person who makes your jewellery, from the first sketch to the final polish.
We offer both natural and lab-grown diamonds, ethically sourced gold and platinum, and a fully transparent pricing process. Most custom pieces are completed in 2 to 3 weeks — not months — because everything is handcrafted in-house under one roof.
Start with a consultation — in person or online — to share your vision or get inspired.
Select your stone, setting, and style. See a 3D rendering of your piece before it's made, or explore samples in our showroom for inspiration.
Our master jewellers handcraft your piece using ethically sourced stones and precious metals — with precision, passion, and care.
When the moment comes, your piece is ready — inspected, polished, and presented for you to take home.
Every detail of our process is designed around you — from ethically sourced materials to lifetime care.
Only the highest-grade precious metals and gemstones make it into our studio. Center diamonds of meaningful size are independently certified — GIA for natural stones, IGI for lab-grown. Every setting is hand-inspected by Sergio before it leaves our bench.
Work one-on-one with Master Goldsmith Sergio Chamahyan from the very first consultation through concept sketches, 3D CAD rendering, stone selection, and final handcrafting. No salespeople, no intermediaries.
All natural diamonds are sourced in full compliance with the Kimberley Process — conflict-free with a documented chain of custody. We also offer lab-grown diamonds produced in certified facilities, plus responsibly sourced gold and platinum.
Every custom piece from OROSERGIO comes with a lifetime warranty covering craftsmanship. We also offer complimentary cleaning, inspections, and rhodium re-plating for white gold — because the relationship doesn't end at delivery.
Every diamond that enters our Toronto studio — whether natural or lab-grown — is ethically sourced and fully traceable. Our natural diamonds are sourced exclusively through dealers who are members of the Canadian Jewellers Association and adhere to the Kimberley Process, an international framework that prevents conflict diamonds from entering the global supply chain.
We also offer lab-grown diamonds as a conflict-free alternative. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — the only difference is origin. They are produced in certified facilities using High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) technology, and they cost 60–80% less than comparable natural stones. Both types are graded by GIA and both are real diamonds.
Beyond diamonds, we are equally committed to responsible metal sourcing. The gold and platinum used in our custom jewellery is sourced from refiners that adhere to responsible mining practices — ensuring no conflict gold enters our supply chain. As a CJA member, OROSERGIO upholds the association's strict code of ethics governing transparency, material representation, and professional conduct.
Design a one-of-a-kind engagement ring with natural or lab-grown diamonds.
Custom tennis bracelets and necklaces set with your choice of stones.
Two stones, one ring — designed to tell your story.
Curated pieces ready to ship from our Toronto studio.
With 30 years of personal expertise and a proud membership in the Canadian Jewellers Association, Sergio and his team bring your vision to life entirely under one roof.
Learn More“Sergio is the best jewelry in the city. I know this because I’ve been to a lot to find the perfect place to design custom rings and bracelets. I’m yet to purchase the ring but this is off the first appointment and obviously I’m going back to get the ball rolling. I got the perfect engagement for my partner at what I thought was the best and perfect jeweller but Sergio outshines him by a lot. Sergio is transparent, honest, welcoming, professionally and friendly. He knows his stuff. Can’t wait to post the rings once we purchase it.”
— ModeParChocolat“Sergio is a very experienced and talented jeweller. He communicated well with our needs and responded quickly. I appreciate his design, jewel choice, and craftsmanship. His rings are of great value, and I recommend buying engagement and wedding rings from him!”
— Derek Liu“Sergio is absolutely amazing! He took care of everything step by step to ensure I got the exact most perfect ring I could dream of. I cannot recommend him enough! Also…she said yes!”
— noah michelinCan't find the answer you're looking for? Get in touch with us directly.
Absolutely. Many of our clients bring heirloom diamonds, personally sourced gemstones, or stones purchased elsewhere to incorporate into a custom design. During your consultation, Sergio will assess the stone in person and recommend settings that complement its shape, colour, and character. All client-supplied stones are fully insured while in our care.
Not at all — more than half of our clients come to their first consultation with only a vague idea or a few saved images for inspiration. Sergio will sketch concepts based on your preferences, refine them in 3D CAD, and present a photorealistic rendering of your piece before anything is made. The custom jewellery process is collaborative from start to finish.
Yes. We offer virtual consultations via video call for clients across Ontario and Canada who are unable to visit our downtown Toronto studio. During the call, Sergio walks you through design options, stone selections, and pricing — the same experience as an in-person visit. Many of our custom jewellery clients outside the GTA begin their project entirely online.
Custom jewellery at OROSERGIO typically starts from $4,000. Engagement rings range from $4,000 to $20,000 depending on diamond type and setting complexity. Lab-grown diamond pieces generally fall between $4,000 and $8,000, while natural diamond pieces range from $8,000 to $20,000. Tennis bracelets, pendants, and toi et moi rings are quoted individually based on design and stone selection. We provide a detailed, transparent quote during your consultation — no hidden costs.
Most custom jewellery pieces are completed in 2 to 3 weeks from design approval — significantly faster than the 6 to 12 week industry average. This is possible because Master Goldsmith Sergio Chamahyan handles every stage in-house at our downtown Toronto studio, from CAD rendering to stone setting to final polish, with no outsourced manufacturing delays.
Our studio is located in the heart of downtown Toronto on Queen Street East. We welcome clients from across the Greater Toronto Area and beyond. For those travelling from afar, we offer virtual consultations and personalized shopping experiences — ensuring the same level of care, guidance, and attention to detail wherever you are. Let's bring your vision to life and create pieces that are as meaningful as they are beautiful.
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