Precious metals gold, silver, platinum, palladium and titanium, plating, enamelling, finishes

Rolled Gold – Rolled gold is a very thin sheet of gold that is laminated to a lesser metal (usually brass or copper). The two layers of metal are heated under pressure to fuse them together. The sheet is then rolled into a very thin sheet and then used to make jewellery or other objects e.g. pens. The gold will wear off over time, we can guild certain items. gilding is a very thin surface covering and will usually only last a limited period of time depending on wear and tear. Rolled gold pieces are marked rolled gold plate, R.G.P., or plaqué d’or laminé.

Laser soldering requires less heat to repair jewellery.

This is beneficial in cases where a jewellery items contains more fragile gemstones, previously these stones would have to be removed. Silver jewellery can be repaired much more easily with this process. We can also repair metals that are non-precious, such as those used in costume jewellery or fashion accessories.

Metal Allergies – If wearing certain jewellery causes localized areas of skin to become itchy, red and/or swollen this can indicate an allergic reaction to the metals in jewellery. Nickel is the most common culprit; if a 9ct gold piercing, bracelet, necklace or ring is causing a reaction, it’s the nickel in the gold—not the gold itself—causing the problem. Women are more commonly affected by a nickel allergy than men. People rarely have a reaction to pure gold (24k), platinum or titanium. There is a risk of allergic reactions with sterling silver too. European Directive 94/27/EC was made UK Law in 2000 and specifies the upper limit for nickel release in articles which have direct and prolonged contact with the skin – such as Jewellery, fashion accessories, and metal adornments for apparel. It also specifies the upper limit for nickel content in specified articles.

Tarnishing – Some, not all, metals tarnish. The discoloration occurs when the metal is able to react with or be attacked by something that can make a chemical compound with the underlying metal. (A chemical compound is a substance consisting of two or more different elements chemically bonded together). Silver can react with oxygen or sulphur compounds to form a brownish-to-black tarnish film. This is due to the formation of oxides (An oxide is a chemical compound containing at least one oxygen atom as well as at least one other element) and/or sulphides (a compound of sulphur and an element that has a more positive electric charge) on the metal surface. Because of the small particle size, the oxide/sulphide particles on the surface appear black, so the metal loses its lustre. Pure gold is resistant to such reactions however lower carat golds are all alloys of gold with other metals and as such can tarnish. Wherever it occurs, tarnish almost always looks very different from the original polished metal. Tarnish is removed either by employing another chemical reaction to dissolve the tarnished surface or by using a mild abrasive to actually polish away the discoloured compound on the metal to expose the underlying metal again. Ordinarily, such cleaning processes remove very little of the original metal.