Life is full of encounters that count and magical moments. Laughter, tears, heartfelt moments... that make each life unique. But life goes on, it goes on. So what are we waiting for to celebrate it even more? That's why Emilie Duchêne created her line of personalized jewelry. To celebrate a turning point in her life: the birth of her first daughter Thea. Handmade jewelry written in her own hand. Unique. To mark moments and encounters that are just as unique. Trendy jewelry delivered with care in an elegant case, designed to celebrate life.

A Thea Jewelry jewel is a creation from A to Z, a unique piece made just for you, certified diamonds, customized settings, 18-carat fine gold, 925 silver, quality stones from mines that refuse child labor.

Thea is a brand committed to the environment through a variety of actions. Our packaging is made from recycled materials and we favor green shipping methods.

Once you have finalized your order, the jewel is designed by hand in our workshops and sent by post, all within 4 weeks' notice. And yes, handmade things do take a bit of time!

Our aim is to enable you to create the jewel of your dreams, which symbolizes a story, a person or a moment in your life, and which will accompany you every day.

Our jewelry is made in family-run workshops in Valence (Bellon & Fils) that embody all the brand's values, i.e. ethical and responsible.

Our Thea jewelry is totally handmade from recycled metals. You can take a look behind the scenes of our workshop in the "Workshop" front-page story on our Instagram page @theajewelry.

You will be able to attest to the presence of the state hallmark and our Thea Jewelry brand hallmark inside the jewel, certifying its quality and authenticity.

Thea Jewelry is an online-only brand, so we don't have any boutiques.

However, we do hold regular pop-ups where you can come and discover Thea jewelry and the brand's designer, Emilie. Follow us on Instagram so you don't miss a thing @theajewelry. You can also make an appointment at our offices for personalized guidance in creating your jewelry by email at hello@thea-jewelry.com.

By subscribing to our Newsletter, you can benefit from a promotional code of -10% on your first order. We also offer discount codes in stories on our Instagram account or via influencers.

We do not offer sales or student discounts.


Thea Jewelry offers you a few tips on how to find out your finger size quickly and easily in a Journal article. Discover it here!

If you're still not sure, we recommend that you go to a jeweller's to have your measurements taken.

It is possible to add an accent or umlaut to your jewelry. To do so, please specify it in the comments when placing your order, and send an e-mail to hello@thea-jewelry.com .

As the jewel is already 100% made-to-measure and personalized (inscription, metal, setting), we do not offer the possibility of engraving it.

Yes, it is quite possible to have your gold taken back in exchange for a voucher to be redeemed on our site. For more information, please visit our Journal.

It's also possible to add a greeting card with a personalized note to your order. To do so, it is important to indicate this in the comments when placing the order. 

Yes, you can choose the gemstone(s) to set your jewelry. We offer precious stones: diamonds, black diamonds, rubies, emeralds, sapphires, and semi-precious stones: champagne zircons, white zircons, red zircons, green zircons...

Precious, semi-precious and, above all, carefully selected. For your jewelry, choose from ruby, emerald, sapphire (1 mm), white diamonds (HSI quality - 1 mm) and even black diamonds (1 mm).

Yes, all our precious and semi-precious stones are natural. We do not use stones from laboratories.  

Our stones all come from ethical mines that do not use child labor.

Our rubies and sapphires come from Thailand, our Emeralds and Diamonds from India, and our Gold from Switzerland.


In order to guaranteehe quality of manufacture of your handmade jewelleryWe have a lead time of 4 weeks and delivery within 2 working days.

If you prefer, you can collect the jewel directly from the company's headquarters. To do so, please send an e-mail to hello@thea-jewelry.com to arrange a date and time to pick it up.

Your jewelry will first be packed in a protective case, then in a small Thea Jewelry bag. All our packaging is eco-responsible. We make every effort to protect your jewelry during delivery.

Once your jewel is ready for shipment, you'll receive an email with a tracking link so you can follow the delivery of your order.

No, once an order has been placed it is not possible to cancel or modify it.

As the jewels are totally made-to-measure and personalized, it is not possible to exchange them. However, it is possible to enlarge or reduce the size of your ring by sending it for repair, at your own expense.

For jewelry from collaborations or timeless collections, it is possible to exchange (while stocks last) or return within 30 days.

Being 100% made-to-measure and personalized, it is not possible to return your jewelry. Only certain co-creations can be returned. You can find all the information in the General Terms and Conditions on the website.

If your jewel still hasn't arrived, you can check where it is in the delivery process by using the tracking link sent to you by e-mail. If this option doesn't give you more information, you can send your request by e-mail and we'll get back to you as soon as possible: hello@thea-jewelry.com .

The confirmation email is sent automatically once the order has been placed. Please check your spam or junk mail folder. If you haven't received anything, you can send us an email and we'll get back to you as soon as possible: hello@thea-jewelry.com .

For orders placed outside the EU, shipping and customs fees will apply. Thea Jewelry has no control over the latter. If you have any questions about customs regulations, please contact your local customs office.


Each piece of jewellery comes with a 2 years and for life for orders after 01/02/24. This guarantee covers production faults such as: broken chain, broken ring, faulty setting, faulty gilding, etc.

We do our utmost to guarantee the quality that will enable you to keep your jewelry for life. However, if you have a problem with your jewel, please contact our customer service department at hello@thea-jewelry.com and we'll do our best to resolve it as quickly as possible.

Don't panic, Thea Jewelry allows you to shrink or enlarge the size of your jewel.

Please contact us at hello@thea-jewelry.com

Yes, it is entirely possible to have the jewelry cleaned at Thea, at your own expense. If not, we recommend you order our What Matters cleaner.

You can send an e-mail with your request to hello@thea-jewelry.com and we'll try to find a solution as soon as possible.

Skin PH varies from person to person. Some people have very acidic skin, which can affect the shine and quality of the jewel. For others, the jewel will remain intact. Unfortunately, this is an unpredictable element that we can't do anything about.

Skin PH varies from person to person. Some people have very acidic skin, which can affect the shine and quality of the jewel. For others, the jewel will remain intact. Unfortunately, this is an unpredictable element that we can't do anything about.

You can also order our What Matters "Let it Sparkle" cleaner to maintain and restore the shine of your jewelry.


We offer payment by credit card, Bancontact with QR code, ApplePay, IDeal, as well as deferred payment +30 days or in 2, 3 or 4 instalments free of charge.

 Only personal data provided voluntarily by the user are collected.

This personal data is kept, for a limited time, in a computer file that THEA JEWELRY reserves the right to use or market with the express consent of the user.

THEA JEWELRY undertakes to take all necessary precautions to ensure the security of the user's personal data, in particular to prevent it from being distorted, damaged or communicated to unauthorized third parties.

Personal data may, if necessary, be communicated at the request of the judicial authorities or the police, without the prior authorization of the holder.

In accordance with the Law of December 8, 1992 on the protection of privacy with regard to the processing of personal data, the user has the right, free of charge and at any time, to access, rectify, modify and delete data concerning him or her, by simple request addressed to : THEA JEWELRY, registered with the ECB under number 0898 355 897, headquartered at Avenue Vert Chasseur 3A - 1180 Brussels - Belgium.

In order to offer you the best possible experience, our sign is fully secured according to current standards.