Wristwatches worn daily are constantly exposed to stress: shocks, dust, water, and temperature fluctuations. To counteract the wear of some moving parts and the natural aging of oils and lubricants, it is recommended to have the watch undergo routine maintenance approximately every two years.
Just a few simple precautions are enough to ensure a watch functions properly for many years.
It’s important to avoid strong vibrations and impacts (e.g., while playing tennis or golf, mountain biking, etc.) as well as extreme temperatures. If you own multiple watches, it’s advisable to store them separately to prevent scratching. If not worn regularly, mechanical watches should be wound at least once a month to slow the natural deterioration of lubricants and oils.
Always remember to rinse the watch with lukewarm water after exposing it to seawater.
Carefully screw down the crown to prevent water from entering the mechanism.
If the crown is not screw-down, make sure to return it to its neutral position to avoid water infiltration.
A watch’s water resistance cannot be guaranteed indefinitely, as the seals may deteriorate over time due to climate changes, impacts, or exposure to substances such as body creams or perfumes.
We recommend having the water resistance of your watch checked regularly and the seals replaced periodically, exclusively by authorized service centers.
Avoid exposure to magnetic fields commonly encountered in daily life (e.g., microwaves, televisions, speakers, carry-on luggage security systems, etc.).
High-quality leather straps should be kept away from oily substances, solvents, detergents, and cosmetics. This helps prevent discoloration and premature aging of the material.
Precious jewelry we’ve kept for years doesn’t always reflect who we are today or what we truly want to wear. Trade in your old gold for new jewelry at the best market value.
Choose what you truly love from our collections — or let us create a unique piece just for you.
At Mossa, the creative process behind each piece of jewelry is always inspired by the client’s needs and personality. This is why a Mossa jewel is not merely the result of fine craftsmanship, but also of a creative research laboratory led by true “Jewelry Architects” — in the sense of both designers and visionaries.
Our engraving service allows you to personalize each creation, as long as there are no insurmountable technical limitations within the available space. You can engrave a name, a phrase, a date, or a custom design — in any language — agreed upon with the client.
Engraving is traditionally done using a burin, a tool that carves directly into the metal. However, most engravings today are performed with laser technology, which offers greater precision.
An engraving can later be removed or replaced with a new one.
Polishing
If a piece of jewelry has surface scratches or has simply lost its shine, it can be polished.
However, polishing is not suitable for rhodium-plated jewelry.
At Mossa, the brilliance of gold is restored in our workshops using a felt wheel and a special polishing paste. To clean a piece of jewelry, it is immersed in an ultrasonic bath with warm soapy water, allowing even the most hard-to-reach areas to be thoroughly cleaned.
Any creation can undergo ultrasonic cleaning — except those containing pearls, emeralds, or other delicate stones. During the polishing process, a very thin layer of metal is removed.
For this reason, we recommend polishing gold jewelry only a few times over its lifetime.
Adjustments & Sizing
In our workshops, we can resize rings, bracelets, and necklaces — either by reducing or increasing their size. To adjust a ring, our technician uses an ultra-fine saw to open it, removes or adds metal as needed, and then carefully rejoins the two parts using precision pliers. For link bracelets or necklaces, the adjustment involves adding or removing links. The piece is then polished using brushes and three different abrasive pastes, resulting in a perfectly smooth and shiny surface.
Rhodium plating
To enhance the purity and brilliance of white gold, it is sometimes coated with a thin layer of rhodium a metal belonging to the platinum family. After polishing, the jewelry is immersed in a rhodium bath, which deposits a new, delicate layer of metal over the white gold.
Restoration
Our restoration service allows a damaged piece of jewelry to regain its original appearance.
The process begins with a cost estimate. Once the client approves the quote, the workshop technician reshapes the jewelry using a small hammer. If needed, soldering is performed to join two parts of the piece, using a torch that brings the metal to a very high temperature for proper manipulation.
The next step is the removal of any oxidation, achieved by immersing the piece in an acid bath.
In the event of a lost stone, our professional stone setter will carefully reset it. This is an extremely delicate phase, which may require reconstructing the prongs and the setting to securely hold the gemstone in place.
Engraving
Our engraving service allows you to personalize each creation, as long as there are no insurmountable technical limitations within the available space. You can engrave a name, a phrase, a date, or a custom design — in any language — agreed upon with the client.
Engraving is traditionally done using a burin, a tool that carves directly into the metal. However, most engravings today are performed with laser technology, which offers greater precision.
An engraving can later be removed or replaced with a new one.
Ring size
To find the correct ring size, you can measure the diameter of a ring you already own or measure the circumference of your finger, which corresponds to the inner circumference of the ring.
Choose a band-style ring that fits the desired finger. Using a ruler, measure the inner diameter and find the corresponding Italian size in the chart.
Measuring the Circumference of Your Finger. To measure your finger’s circumference, you can use a soft measuring tape. Find the corresponding Italian size in the chart. The chosen size should slide comfortably along the entire length of the finger.
If you’re unsure between two sizes, it’s better to choose the larger one. The type of ring also affects the ideal fit: larger designs, such as wide bands, are generally worn more loosely than smaller styles like eternity rings or thin bands. Keep in mind that our hands are not perfectly symmetrical a ring that fits a finger on your left hand may not fit the same finger on your right hand.
| Ring size | Inner diameter in mm | Inner circumference in mm |
| 6 | 14,65 | 46 |
| 7 | 14,97 | 47 |
| 8 | 15,29 | 48 |
| 9 | 15,60 | 49 |
| 10 | 15,92 | 50 |
| 11 | 16,24 | 51 |
| 12 | 16,56 | 52 |
| 13 | 16,88 | 53 |
| 14 | 17,2 | 54 |
| 15 | 17,52 | 55 |
| 16 | 17,83 | 56 |
| 17 | 18,15 | 57 |
| 18 | 18,47 | 58 |
| 19 | 18,79 | 59 |
| 20 | 19,11 | 60 |
| 21 | 19,43 | 61 |
Ring size
To measure your wrist, use a soft measuring tape. Wrap it around your wrist and note the number that aligns with the zero mark. You can then add or subtract centimeters depending on whether you want a loose, regular, or snug fit. Alternatively, you can measure a bracelet you already own.
Jewelry Care Guide
Whether worn daily or on special occasions, jewelry is a precious possession that requires proper care.
We recommend handling it with care and removing it when washing your hands, applying perfume, or using creams. Repeated contact with everyday detergents or insect repellents can damage pearls and certain gemstones. Choose your jewelry based on your planned activities: avoid wearing it at the beach, in the pool, or during sports to prevent impacts and scratches. The same applies to housework or any manual labor. Be careful not to expose jewelry to intense heat sources and avoid sudden changes in temperature.
Before wearing a piece of jewelry, it’s important to inspect it and ensure that the clasp and any safety closure are functioning properly. Check that the stone settings haven’t shifted: gently shake the piece near your ear if you hear a faint rattle, it may indicate that the stones are not securely held. Rub the jewelry against a fine fabric if it snags, the prongs may have moved. Stone settings can be damaged by impact, which may explain their weakness. We’re not always aware of the stress we place on our jewelry especially rings when they come into contact with objects like keys, handbags, or kitchen utensils.
Jewelry is crafted with precision and artistry, but our lifestyle often exposes it to far more risks than we realize.
Pearl necklaces should have their stringing checked every three years.
Jewelry can become scratched when in contact with other pieces. For this reason, each item should be stored separately in its original case provided at the time of purchase. We strongly advise against storing multiple pieces together without protection.
Cleaning
Jewelry should be inspected and cleaned at least once a year. If the piece includes coral, pearls, lapis lazuli, turquoise, emeralds, or a pavé setting, cleaning should be entrusted to professional technicians.
If it does not contain these types of stones, it can be gently cleaned by soaking it for a few minutes in lukewarm water with a neutral pH soap. Use a soft-bristled toothbrush to gently brush the surface, then rinse thoroughly with lukewarm water and dry with a soft cloth.
Tips
Pearl protection & care:
If pearls are worn frequently, it’s best to have their stringing checked once a year. Avoid spraying perfume directly on pearls. For at-home cleaning, gently wipe them with a damp cloth — without using soap or detergents.Store pearls separately in an individual case. Light, heat, and contact with soap or other cleaning agents can damage them.
Gemstone protection & care:
Gemstones should always be protected from potential impacts. Even diamonds — the hardest of all gemstones — can chip or crack if struck repeatedly or with enough force. That’s why it’s important to regularly check the prongs and settings. If the stones lose their brilliance, the jewelry should be cleaned.
Restoring scratched or dull jewelry:
For most pieces, polishing can remove or reduce surface scratches on gold jewelry. However, since this process removes a thin layer of metal, we recommend polishing white gold no more than twice and yellow gold no more than three times over the lifespan of the piece. To address light surface scratches, a gentler polishing service may also be an option. Our specialists are available to assess your jewelry and recommend the service that best meets your expectations.
Wristwatches worn daily are constantly exposed to stress: shocks, dust, water, and temperature fluctuations. To counteract the wear of some moving parts and the natural aging of oils and lubricants, it is recommended to have the watch undergo routine maintenance approximately every two years.
Just a few simple precautions are enough to ensure a watch functions properly for many years.
It’s important to avoid strong vibrations and impacts (e.g., while playing tennis or golf, mountain biking, etc.) as well as extreme temperatures. If you own multiple watches, it’s advisable to store them separately to prevent scratching. If not worn regularly, mechanical watches should be wound at least once a month to slow the natural deterioration of lubricants and oils.
Always remember to rinse the watch with lukewarm water after exposing it to seawater.
Carefully screw down the crown to prevent water from entering the mechanism.
If the crown is not screw-down, make sure to return it to its neutral position to avoid water infiltration.
A watch’s water resistance cannot be guaranteed indefinitely, as the seals may deteriorate over time due to climate changes, impacts, or exposure to substances such as body creams or perfumes.
We recommend having the water resistance of your watch checked regularly and the seals replaced periodically, exclusively by authorized service centers.
Avoid exposure to magnetic fields commonly encountered in daily life (e.g., microwaves, televisions, speakers, carry-on luggage security systems, etc.).
High-quality leather straps should be kept away from oily substances, solvents, detergents, and cosmetics. This helps prevent discoloration and premature aging of the material.
Precious jewelry we’ve kept for years doesn’t always reflect who we are today or what we truly want to wear. Trade in your old gold for new jewelry at the best market value.
Choose what you truly love from our collections — or let us create a unique piece just for you.
At Mossa, the creative process behind each piece of jewelry is always inspired by the client’s needs and personality. This is why a Mossa jewel is not merely the result of fine craftsmanship, but also of a creative research laboratory led by true “Jewelry Architects” — in the sense of both designers and visionaries.
Our engraving service allows you to personalize each creation, as long as there are no insurmountable technical limitations within the available space. You can engrave a name, a phrase, a date, or a custom design — in any language — agreed upon with the client.
Engraving is traditionally done using a burin, a tool that carves directly into the metal. However, most engravings today are performed with laser technology, which offers greater precision.
An engraving can later be removed or replaced with a new one.
Polishing
If a piece of jewelry has surface scratches or has simply lost its shine, it can be polished.
However, polishing is not suitable for rhodium-plated jewelry.
At Mossa, the brilliance of gold is restored in our workshops using a felt wheel and a special polishing paste. To clean a piece of jewelry, it is immersed in an ultrasonic bath with warm soapy water, allowing even the most hard-to-reach areas to be thoroughly cleaned.
Any creation can undergo ultrasonic cleaning — except those containing pearls, emeralds, or other delicate stones. During the polishing process, a very thin layer of metal is removed.
For this reason, we recommend polishing gold jewelry only a few times over its lifetime.
Adjustments & Sizing
In our workshops, we can resize rings, bracelets, and necklaces — either by reducing or increasing their size. To adjust a ring, our technician uses an ultra-fine saw to open it, removes or adds metal as needed, and then carefully rejoins the two parts using precision pliers. For link bracelets or necklaces, the adjustment involves adding or removing links. The piece is then polished using brushes and three different abrasive pastes, resulting in a perfectly smooth and shiny surface.
Rhodium plating
To enhance the purity and brilliance of white gold, it is sometimes coated with a thin layer of rhodium a metal belonging to the platinum family. After polishing, the jewelry is immersed in a rhodium bath, which deposits a new, delicate layer of metal over the white gold.
Restoration
Our restoration service allows a damaged piece of jewelry to regain its original appearance.
The process begins with a cost estimate. Once the client approves the quote, the workshop technician reshapes the jewelry using a small hammer. If needed, soldering is performed to join two parts of the piece, using a torch that brings the metal to a very high temperature for proper manipulation.
The next step is the removal of any oxidation, achieved by immersing the piece in an acid bath.
In the event of a lost stone, our professional stone setter will carefully reset it. This is an extremely delicate phase, which may require reconstructing the prongs and the setting to securely hold the gemstone in place.
Engraving
Our engraving service allows you to personalize each creation, as long as there are no insurmountable technical limitations within the available space. You can engrave a name, a phrase, a date, or a custom design — in any language — agreed upon with the client.
Engraving is traditionally done using a burin, a tool that carves directly into the metal. However, most engravings today are performed with laser technology, which offers greater precision.
An engraving can later be removed or replaced with a new one.
Ring size
To find the correct ring size, you can measure the diameter of a ring you already own or measure the circumference of your finger, which corresponds to the inner circumference of the ring.
Choose a band-style ring that fits the desired finger. Using a ruler, measure the inner diameter and find the corresponding Italian size in the chart.
Measuring the Circumference of Your Finger. To measure your finger’s circumference, you can use a soft measuring tape. Find the corresponding Italian size in the chart. The chosen size should slide comfortably along the entire length of the finger.
If you’re unsure between two sizes, it’s better to choose the larger one. The type of ring also affects the ideal fit: larger designs, such as wide bands, are generally worn more loosely than smaller styles like eternity rings or thin bands. Keep in mind that our hands are not perfectly symmetrical a ring that fits a finger on your left hand may not fit the same finger on your right hand.
| Ring size | Inner Diameter in mm | Inner Circumference in mm |
| 6 | 14,65 | 46 |
| 7 | 14,97 | 47 |
| 8 | 15,29 | 48 |
| 9 | 15,60 | 49 |
| 10 | 15,92 | 50 |
| 11 | 16,24 | 51 |
| 12 | 16,56 | 52 |
| 13 | 16,88 | 53 |
| 14 | 17,2 | 54 |
| 15 | 17,52 | 55 |
| 16 | 17,83 | 56 |
| 17 | 18,15 | 57 |
| 18 | 18,47 | 58 |
| 19 | 18,79 | 59 |
| 20 | 19,11 | 60 |
| 21 | 19,43 | 61 |
Ring size
To measure your wrist, use a soft measuring tape. Wrap it around your wrist and note the number that aligns with the zero mark. You can then add or subtract centimeters depending on whether you want a loose, regular, or snug fit. Alternatively, you can measure a bracelet you already own.
Jewelry Care Guide
Whether worn daily or on special occasions, jewelry is a precious possession that requires proper care.
We recommend handling it with care and removing it when washing your hands, applying perfume, or using creams. Repeated contact with everyday detergents or insect repellents can damage pearls and certain gemstones. Choose your jewelry based on your planned activities: avoid wearing it at the beach, in the pool, or during sports to prevent impacts and scratches. The same applies to housework or any manual labor. Be careful not to expose jewelry to intense heat sources and avoid sudden changes in temperature.
Before wearing a piece of jewelry, it’s important to inspect it and ensure that the clasp and any safety closure are functioning properly. Check that the stone settings haven’t shifted: gently shake the piece near your ear if you hear a faint rattle, it may indicate that the stones are not securely held. Rub the jewelry against a fine fabric if it snags, the prongs may have moved. Stone settings can be damaged by impact, which may explain their weakness. We’re not always aware of the stress we place on our jewelry especially rings when they come into contact with objects like keys, handbags, or kitchen utensils.
Jewelry is crafted with precision and artistry, but our lifestyle often exposes it to far more risks than we realize.
Pearl necklaces should have their stringing checked every three years.
Jewelry can become scratched when in contact with other pieces. For this reason, each item should be stored separately in its original case provided at the time of purchase. We strongly advise against storing multiple pieces together without protection.
Cleaning
Jewelry should be inspected and cleaned at least once a year. If the piece includes coral, pearls, lapis lazuli, turquoise, emeralds, or a pavé setting, cleaning should be entrusted to professional technicians.
If it does not contain these types of stones, it can be gently cleaned by soaking it for a few minutes in lukewarm water with a neutral pH soap. Use a soft-bristled toothbrush to gently brush the surface, then rinse thoroughly with lukewarm water and dry with a soft cloth.
Tips
Pearl protection & care:
If pearls are worn frequently, it’s best to have their stringing checked once a year. Avoid spraying perfume directly on pearls. For at-home cleaning, gently wipe them with a damp cloth — without using soap or detergents.Store pearls separately in an individual case. Light, heat, and contact with soap or other cleaning agents can damage them.
Gemstone protection & care:
Gemstones should always be protected from potential impacts. Even diamonds — the hardest of all gemstones — can chip or crack if struck repeatedly or with enough force. That’s why it’s important to regularly check the prongs and settings. If the stones lose their brilliance, the jewelry should be cleaned.
Restoring scratched or dull jewelry:
For most pieces, polishing can remove or reduce surface scratches on gold jewelry. However, since this process removes a thin layer of metal, we recommend polishing white gold no more than twice and yellow gold no more than three times over the lifespan of the piece. To address light surface scratches, a gentler polishing service may also be an option. Our specialists are available to assess your jewelry and recommend the service that best meets your expectations.