Ask for a durable thickness rather than a decorative one.
The info from http://easyelectroplating.co.uk/silver-plating-services/ may be useful:
"The classification for the thickness of silver plating relating to the solutions that we use is as follows:
The minimum thickness for silver plating is equal to 0.5 microns. This is used mainly for a decorative finish on items with minimal handling.
Heavy silver plate is classed as 2.5+ microns. The normal thickness we apply would be between 2.5 - 6 microns dependent upon the item and its intended use. This provides a long lasting finish on high wear items such as; watches, buckles, trophies and jewellery.
Our specially developed silver plating solutions are tarnish resistant, hard wearing and extremely durable. A silver plating of just 5 microns is often more than adequate for the long term durability of high wear items if cared for properly. A general rule is to allow 1 micron in silver thickness for every year of intended use."
The info from http://easyelectroplating.co.uk/silver-plating-services/ may be useful:
"The classification for the thickness of silver plating relating to the solutions that we use is as follows:
The minimum thickness for silver plating is equal to 0.5 microns. This is used mainly for a decorative finish on items with minimal handling.
Heavy silver plate is classed as 2.5+ microns. The normal thickness we apply would be between 2.5 - 6 microns dependent upon the item and its intended use. This provides a long lasting finish on high wear items such as; watches, buckles, trophies and jewellery.
Our specially developed silver plating solutions are tarnish resistant, hard wearing and extremely durable. A silver plating of just 5 microns is often more than adequate for the long term durability of high wear items if cared for properly. A general rule is to allow 1 micron in silver thickness for every year of intended use."
