Our gemology & expertise service

Understanding, Choosing, and Showcasing Your Gemstones

Every gemstone has its own characteristics, history, and uniqueness. At Lionel Meylan, our gemology and appraisal department guides you through the process of discovering, selecting, and evaluating your gemstones and jewelry with precision, passion, and transparency.

Whether you’d like to select a gemstone for a custom-made piece, have a stone authenticated, determine the value of a piece of jewelry, or obtain an appraisal for insurance, estate planning, a purchase, or a sale, we’re here to put our expertise at your service. We also advise you on projects to transform vintage jewelry, giving it new life while preserving its history.

Our gemologists are here to help

At our boutique on Place de la Palud in Lausanne, Juliette and Cristina put their expertise and passion to work for your projects. Thanks to their specialized training and keen eye, they’ll guide you in selecting, identifying, and appraising your gemstones, taking into account their characteristics and value.

Juliette Borgaers

A graduate of the Gemological Institute of America (GIA) and the Gemmological Association of Great Britain (GEM-A), Juliette combines technical expertise with a keen eye to guide you through the fascinating world of gemstones.

She carefully examines each gem, studying its color, cut, luster, and unique characteristics. Passionate about gemstones, she loves to share her knowledge, introduce you to their history, and help you better understand what makes them unique.

As part of our appraisal department, she advises you on identifying and authenticating gemstones, appraising your stones and jewelry, and selecting stones for a custom design.

Cristina Argenti

A graduate of the Gemological Institute of America (GIA) with a degree in gemology, Cristina Argenti applies her expertise to the selection and evaluation of gemstones.

Having always been fascinated by the beauty of minerals—from seaside pebbles to the most precious gems—she has turned this passion into her profession. Her rigorous training and discerning eye enable her to examine each stone with precision, identify its characteristics, and help authenticate it.

She will assist you in selecting exceptional gemstones, as well as in appraising and valuing your jewelry and gemstones, providing advice tailored to your needs.

Expertise Tailored to Each Project

Every request deserves special attention. Whether you’d like to learn more about a stone, have a piece of jewelry you cherish appraised, or select a gemstone for a future creation, our gemologists will guide you with professionalism and transparency.

Our goal: to provide you with a clear understanding of your gemstones and jewelry, so you can make your choices with confidence and preserve the value of what is precious to you.

Custom Design & Jewelry Workshop

From transforming vintage jewelry to creating custom pieces, we design and craft one-of-a-kind pieces, tailored to your desires and showcasing your precious stones. At Lionel Meylan, each piece of jewelry is a fusion of your story and our craftsmanship—a creation designed to bring your emotions to life.

Would you like to give your loved one a truly exceptional piece of jewelry, or breathe new life into a piece that’s dear to you? Our workshop will guide you through every step of your project, from the initial idea to the finished piece.

On the first floor of our boutique in Vevey, our team puts its creativity, precision, and expertise to work on your projects. Sarah Layaz, a jeweler, guides you through the design process—from the initial sketch to the technical decisions—to bring your vision to life. Working alongside her, Esteban Hauser contributes his expertise in stone setting, while Kenza Messaouden—trained as a gem cutter and in jewelry making—enriches the workshop’s diverse range of skills.

Thanks to the complementary nature of these areas of expertise, we bring your ideas to life by combining design, artisanal craftsmanship, and mastery of gemstones. Depending on your project, 3D modeling also allows you to visualize your future piece of jewelry before it is crafted.

Our workshop also offers services such as remodeling existing jewelry, restringing pearls, and general maintenance. Every project is approached with respect for the history and spirit of your jewelry, in order to preserve its value and extend its life.

Combining jewelry-making tradition with contemporary techniques, we create unique pieces of jewelry that are carefully crafted and imbued with meaning.

Repair and refurbishment

We take special care in repairing and maintaining your jewelry to preserve its beauty and keep its story alive.

Whether it’s polishing or rhodium plating to restore the luster of precious metals, resetting a stone, or replacing one, our workshop applies its expertise to your jewelry, while respecting its character and history.

Sarah Layaz, a jeweler, brings both precision and sensitivity to our after-sales service. She restores, transforms, and adjusts your jewelry with the same care she devotes to a custom creation. Working alongside her, Esteban Hauser—a jeweler also trained in gem-setting—performs routine repairs and maintenance, ensuring the durability and brilliance of each piece.

Kenza Messaouden, who trained in jewelry making and gem cutting as a gemstone cutter, rounds out the workshop’s expertise. Her dual training gives her a unique perspective on gemstones and how to showcase them, helping to preserve the harmony and beauty of your jewelry.

Wedding rings and engagement rings

At Lionel Meylan, we’re here to help you choose your wedding bands and engagement rings— precious symbols of your love story. From timeless designs to the most daring creations, we offer a wide selection of styles, materials, and gemstones to suit every budget. We also create custom pieces, designed according to your wishes, for jewelry as unique as your story.

Laser engraving

To personalize your jewelry and watches, our workshop now offers laser engraving, performed right here on-site. Our teams, who are trained in this technology, precisely engrave a variety of materials, including gold and steel.

Engraving on the inside of a ring, an ID bracelet, a signet ring, or a watch case back: we personalize your pieces exactly as you wish, with precision and prompt service.

Our experts

Juliette Borgaers

Cristina Argenti

Gemmologist and sales consultant

Esteban Hauser

Jeweller – Stone Setter

Sarah Layaz

Head of Jewellery Workshop

Kenza Messaouden

Jeweller – Lapidary

Yannick Meylan

Management

Request for Information

+41 21 925 50 50

Gemmology glossary

Aquamarine & Morganite

Diamond

Emerald

Garnet

Pearl

Ruby

Sapphire

Spinelle

Tanzanite

Tourmaline

Zircon