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Use & Maintenance

Your Kern jewel has been designed with great care according to the requirements and rules of the jewelry industry. Each step of the manufacturing process has been carried out with the utmost care, in order to create an exceptional piece. To keep it looking its best, we recommend that you carefully follow our maintenance tips:

Tips for use

When you are not wearing it, it is preferable to store your jewellery in its original case or pouch, thus avoiding rubbing with other jewellery, shocks and scratches.

When wearing your jewelry, be sure to handle it gently to avoid bumps and falls. It is preferable to remove your jewellery when practising sports.

Avoid contact with salt water, sand, cosmetics, perfumes, detergents and any corrosive product that could alter precious metals and gems.

We recommend that you have the condition of your jewellery checked every year. Do not hesitate to make an appointment with our workshops to have the crimps, clasps and their double security checked. During this visit, our jewellers will know how to revive the brilliance of your pieces and give back to the gems all their vivacity.

Maintenance instructions

To intensify the shine of your jewelry, do not hesitate to rub them with a soft and dry cloth. If you wish to clean them, you can immerse them in soapy water (PH neutral soap) to eliminate impurities due to pollution.

Then rinse them with clean water and dry them carefully with a soft cloth.

This procedure does not apply to bracelets set with emeralds, for which we recommend special attention.

Polishing and rhodium-plating operations, which are effective in restoring the shine to your jewellery, cannot be repeated too frequently.

The first polishing and rhodium plating are offered by Kern. The following, which should preferably be carried out in our workshops, are at the customer’s expense.

Quality of the Gems

Laboratory Diamonds

Maison Kern offers exclusively synthetic diamonds, created using advanced technological processes (HPHT or CVD).

  • Optical, chemical, and physical properties identical to those of natural diamonds.
  • Independent certification available upon request.
  • Environmentally friendly production with a reduced carbon footprint.

Laboratory-Created Precious and Semi-Precious Stones

All precious and semi-precious stones offered by Maison Kern come from specialized laboratories.

  • Laboratory sapphires: AAA quality, intense color, excellent transparency, and precise cutting.
  • Laboratory black diamonds: deep and uniform shade obtained through laboratory treatment for optimal brilliance.
  • Laboratory brown and champagne diamonds: warm color and natural sparkle, without chemical treatment.
  • Laboratory emeralds: slight inclusions replicating the look of natural stones while offering enhanced durability.
  • Laboratory tsavorites: intense or soft green, a rare stone reproduced with precision for exceptional clarity.
  • Laboratory blue diamonds: color obtained through the controlled presence of boron, ensuring a stable and uniform hue.

Metal

Maison Kern creations are made exclusively from rhodium-plated 925/1000 sterling silver.

  • Rhodium plating protects silver against oxidation and maintains its lasting shine.
  • The silver comes from suppliers committed to responsible and environmentally respectful practices.

Maison Kern Commitments

  • Complete traceability for each laboratory-created stone.
  • Transparency regarding manufacturing processes.
  • Refined and durable jewelry combining aesthetics, innovation, and fine jewelry craftsmanship.

Shipping & Returns

DELIVERY POLICY

Your Kern jewelry is shipped Monday through Friday, excluding holidays. We do not deliver on weekends.

All Kern articles ordered are insured by us until delivery.

We guarantee you the security of the preparation and the routing of your order.

Your jewels are delivered in their Kern box and pouch

Purchase of a custom made bracelet :

Allow 3 to 4 weeks for the creation of your bracelet.

It will be delivered to you in its magnificent jewel case with its certificate of authenticity.

An email will inform you that your bracelet is ready.

A tracking number will be indicated to follow your order on our website under the heading “
m
my account/
m
my orders
”.

Free delivery in the European Union:

Your order is prepared within 2 working days following the date of the confirmation email that your custom made bracelet is ready.

Free delivery to countries outside the European Union:

Delivery is made within 3 to 5 working days following the date of the the date of the confirmation email that your custom bracelet is ready.

Any possible customs duties or import taxes that you may have to pay upon receipt of your package.

RETURN POLICY

Return of a custom made bracelet :

Write to us to let us know the reasons for your return by e-mail at [email protected]

Log in to your account to make your request and you will receive your pre-paid return slip.

For all shipments made in the European UnionIf you are not satisfied with your order, you can return your items within 15 days of receiving your order and in accordance with the return policy of the House of Kern mentioned above in the title ” Under what conditions can items be returned, exchanged or refunded “.

For all shipments outside the European Union, your items can be returned within 15 days of receipt of your order and according to the conditions of return of the House Kern mentioned just before in the title ” Under what conditions can items be returned, exchanged or refunded “.

À Under what conditions can items be returned, exchanged or refundable?

We accept returns on items that require sizing to fit your wrist.

If the bracelet needs to be enlarged, you will be asked to pay an additional fee according to the new size compared to your initial order.

If the bracelet does not match the order

The articles must be returned in their original packaging including the care instructions, the jewel case, its certificate of authenticity and the invoice with the precise reason.

What items are not refundable?

Privilege offers

Items returned worn, incomplete (care instructions, case, certificate of authenticity…), damaged or spoiled.

Size Guide

FIND YOUR KERN BRACELET SIZE BY PRINTING OUR WRIST MEASURING TAPE

You can download and print our measuring tape on an A4 sheet.
Follow the instructions below to place the tape measure on your wrist and know your own size and write it down.

Indications:

Measure your wrist, adjusting the tape measure just above your wrist bone or where you like to wear your bracelet.
Choose the size according to the way you want to wear your bracelet.
Note the measurement by adding :

Half a centimetre (+0.50 cm) for a bracelet worn closer to your skin.
One centimeter (+1 cm) for a bracelet worn more loosely.

For example :

A wrist of 15 cm, choose 15.50 cm or 16 cm depending on how you want to wear your bracelet.

WRIST CIRCUMFERENCE (CM)

SIZE OF THE BRACELETS (CM)

13,50 – 14,00

14 – 14,50

14,50 – 15,00

15 – 15,50

15,50 – 16,00

16 – 16,50

16,50 – 17,00

17 – 17,50

17,50 – 18,00

18 – 18,50

18,50 – 19,00

19 – 19,50