How should I care for designer and second-hand jewellery to maintain its condition?

The best way to maintain designer and second-hand jewellery is to limit exposure to moisture, chemicals, impact and friction, then combine careful home cleaning with regular professional inspection. Good care preserves the finish, protects gemstones and settings, and helps identify wear before it develops into a more costly repair. Second-hand pieces may require particular attention because their previous use, age, construction and any earlier repairs can affect how they should be handled.

Remove jewellery before activities that may damage it. Take off rings, bracelets, earrings and necklaces before bathing, swimming, exercising, gardening, cleaning or undertaking manual work. Chlorine, salt water, soap, hairspray, perfume, cosmetics and household chemicals can dull metals, affect plating, weaken certain settings or damage porous and treated gemstones. Rings are especially exposed to knocks and abrasion, while chains and fine settings can catch on clothing or equipment.

Apply perfume, hairspray, moisturiser and make-up before putting on jewellery, allowing products to dry first. If a piece comes into contact with a chemical, rinse it promptly with clean water where it is safe to do so, then dry it thoroughly with a soft cloth. If the item contains delicate stones, enamel, pearls or an unknown treatment, avoid rinsing and seek advice instead.

Clean most robust jewellery gently and regularly. A soft, lint-free cloth can remove fingerprints, body oils and light surface residue after wear. For some solid gold or platinum pieces with securely set, non-porous gemstones, use lukewarm water with a small amount of mild, unperfumed soap and a very soft brush. Work carefully around the setting, rinse away all residue and pat the piece dry rather than rubbing it harshly.

Do not assume that every designer or second-hand piece can be cleaned in the same way. Avoid home soaking or brushing for jewellery containing pearls, opals, turquoise, coral, amber, emeralds with known treatments, antique finishes, delicate enamel or stones secured with adhesive. These materials may absorb moisture, scratch easily, react to heat or lose surface treatments. Abrasive cloths, toothpaste, bicarbonate of soda, metal polish and strong jewellery dips can also mark the metal or alter its finish.

Ultrasonic cleaning should only be carried out after a professional has confirmed that it is suitable. Vibration can loosen fragile or previously repaired settings, fracture certain gemstones or cause stones with internal inclusions to become damaged. It may also be unsuitable for antique jewellery, plated finishes and pieces with glued components. A professional clean allows the condition of the stones and settings to be assessed at the same time.

Store each item separately in a dry, soft-lined container. Jewellery should not be left loose in a drawer or piled together, as harder stones and metal edges can scratch softer surfaces. Keep chains fastened where practical to reduce tangling, and place rings, earrings and bracelets in individual compartments or pouches. Store pearls and other delicate materials in a breathable fabric pouch rather than an airtight plastic bag, and keep them away from excessive heat, direct sunlight and damp areas such as bathrooms.

Retain original boxes, pouches, certificates and service records where available. They can provide suitable storage and useful information about the item’s design, materials and previous care. However, original packaging does not replace a dry, stable storage environment. Valuable pieces should be kept securely, with insurance and valuation records reviewed when appropriate.

Check for signs of wear before and after wearing a piece. Look for:

• Loose, missing or moving stones
• Claws that feel sharp, catch on fabric or appear flattened
• A worn, stretched or thinning shank on a ring
• Damaged links, split rings, hinges or catches
• A necklace or bracelet that no longer lies evenly
• Scratches, dents, discolouration or areas where plating has worn through
• Loose earring backs or damaged posts
• Marks, condensation or reduced function on a watch

Stop wearing a piece if a stone moves, a clasp will not close securely, a setting catches repeatedly or a structural part appears cracked. Do not try to tighten claws, reshape a ring or repair a chain at home. A small fault can allow a gemstone to fall out or cause further damage if the jewellery continues to be worn.

Second-hand jewellery should be assessed according to its age and construction, not treated as though it were new. Surface marks may be consistent with normal wear, while previous resizing, soldering, polishing or stone replacement can affect the item’s structure and finish. Excessive polishing can soften design details and remove metal over time. Older pieces may also have thinner sections, hand-finished components or settings that require more cautious cleaning and handling.

Preserve desirable original features where possible. A natural patina, maker’s finish or minor age-related mark may form part of a piece’s character and history. Cleaning should remove dirt and harmful residue without unnecessarily altering the finish. If you are unsure whether a mark is damage, patina or an intentional design detail, ask for an assessment before attempting to polish it.

Designer jewellery may require care specific to its materials and finish. Plated or coated surfaces can wear through with repeated friction and polishing. Brushed, satin and textured finishes may become uneven if rubbed with unsuitable cloths. Mixed-metal designs, leather elements, ceramic, coloured coatings and decorative enamel can each have different cleaning requirements. Follow any care guidance supplied with the piece, but obtain professional advice if the jewellery has been altered, repaired or acquired second-hand without its original instructions.

Luxury watches need separate precautions from jewellery. Keep the crown fully pushed in or screwed down where applicable, and do not expose the watch to water unless its water resistance has been confirmed and the seals are known to be in good condition. Water resistance is not permanent: seals age, and opening the case or sustaining an impact can affect protection. Never operate the crown or pushers while the watch is wet. Wipe perspiration and moisture from the case and bracelet, and arrange servicing or testing when the watch gains or loses time, shows condensation, suffers an impact or has not been checked for an extended period.

Do not place a mechanical watch near strong magnets, and avoid storing any watch where it may be knocked, compressed or exposed to extreme temperatures. A watch should be examined by a suitably qualified professional for movement, seals, bracelet wear and case condition rather than simply polished to improve its appearance.

Professional maintenance is important for valuable, delicate and frequently worn pieces. An inspection can identify worn claws, thinning bands, stretched links, weakened catches and loose stones that may not be visible during everyday use. Appropriate aftercare may include cleaning, setting checks, polishing, rhodium plating where suitable, ring resizing, chain or clasp repairs, jewellery remodelling and valuation. The correct service depends on the metal, gemstones, age, construction and previous work carried out on the item.

Bring jewellery for assessment before arranging a repair if it has sentimental, antique or significant financial value. Keep a record of valuations, receipts, photographs and service work, particularly for pieces that are insured or regularly worn. If a loss or damage occurs, avoid cleaning or altering the item before it has been documented, as its condition may be relevant to an assessment.

With consistent handling, suitable storage and timely professional care, designer and second-hand jewellery can retain its condition for many years. The safest approach is to clean conservatively, avoid preventable exposure, inspect vulnerable areas regularly and obtain expert advice whenever a piece contains delicate materials, has a history of repair or shows any change in condition.