This is the most exclusive and costly precious metal. It is very robust and has a uniform grey / silver colour that can be polished to a bright finish or brushed to a matt finish. In a finished jewellery piece, the maintenance involved with platinum is minimal. It does not tarnish and does not require to be rhodium plated. It is an ideal choice for a ring where there may be regular contact with other day to day objects. Like all precious metals, platinum will be susceptible to superficial scuffs and scrapes, but these can be easily polished out.
In the U.K. gold tends to be made into jewellery in either a 9kt or 18kt Alloy. In real terms this equates to 37.5% or 75% gold content respectfully. The remaining percentages are made up of other metal elements to give the jewellery strength or a particular colour. 24kt gold is far too soft to be used in jewellery and needs to be alloyed in this way. Broadly speaking gold can be best described in the following terms: yellow gold, white gold, rose gold and red gold. It is a superbly versatile precious metal and can be used in many aspects of bespoke jewellery design to give a particular look. 18kt gold sits just below platinum in terms of price and 9kt gold is positioned below this due to its lower gold content. Gold is also an ideal metal to work with when remodelling jewellery as it can be melted down easily and reworked into a different design. White gold is usually rhodium plated in finished jewellery to give it bright lustre. Over time white gold, particularly in rings, requires to be re-rhodium plated. This may even be as frequent as every year depending usage.
This is the newest of the precious meatls to be given hallmarking status. The Edinburgh assay ofice recognised it as so in 2001. It is part of the platinum group of metals and has an almost identical colour, melting point, lustre and hardness. The two most recognisable differences between platinum and palladium is its price and density. Palladium is less dense and less expensive than platinum. Palladium is a very popular metal used at Blair and Sheridan. When our clients are designing a ring to a specific budget it can allow for more costs to be applied to a higher quality centre stone(s).