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Reminder of metal hallmarks and treatments
Precious metal and hallmarks
- 925/1000 or Sterling Silver
Silver with a 92.50% silver content. - Rhodium-plated sterling silver
A fine layer of rhodium is added that protects sterling silver from chemical agents that might tarnish or blacken the silver. - Platinum-plated sterling silver
A fine layer of platinum is added to protect sterling silver from air or skin contact and prevent tarnishing. - “Agere” gold-coloured sterling silver
Patented ‘Agere’ treatment that bonds silver and gold molecules, protecting against oxidation, UV, salinity, and sweat. - Gold-plating
Application of a minimum 3-micron layer of gold on a brass base. - 9ct (375/000) Gold
Made of 37.5% pure gold and 62.5% of other metals such as zinc, copper and silver. - 18ct (750/000) Gold
Made of 75% pure gold and 25 % of silver and copper.
Pearls
- • Majorica pearls are imitation pearls made of glass covered in powdered seashells.
- • Tahitian pearls are produced by the black lip oyster (Pinctada Margaritifera) and cultivated exclusively in French Polynesia.
- • Freshwater pearls are cultured pearls produced by a mollusc bred in lakes and rivers.
IMPORTANT RECOMMENDATIONS
Jewellery should always be treated with care. Please advise your clients that silver, gold-plated, or pearl jewellery should not be worn when:
- Avoid during:
- • Bathing in the sea
- • Thermal baths
- • Swimming pools
- Avoid contact with:
- • Perfume and cosmetics
- • Direct sunlight
- • Humid environments
- • Chemical products
