Here we have a Tiffany & Co 925 Sterling Silver Padlock Necklace which I have added lab grown blue diamonds to.
 
The chain length is 15.75 inches and is hallmarked T&CO 925 on the central link.
 
The padlock is hallmarked 925 and signed T & CO 1887
 
Total height of padlock to top of loop approx 18mm whilst width is 14mm
 
The pendant can be removed from the chain for fitting around the neck or putting on another chain.
 
The loop part of the padlock pendant acts as a clasp, pulling it upwards will allow you to twist it to add or remove the chain.