Mastery of Design: A Seventeenth-Century Diamond and Sapphire Necklace

This and all related images from The British Musuem

There's some debate about where this necklace was made.  It could have come from anywhere, but France, the Netherlands, and England have been speculated.  Nonetheless, it's a safe bet that it dates to the early Seventeenth Century.

The gold necklace is comprised of thirty-five square mounts of gold containing diamonds cut in the form of a truncated pyramid and central pendant of three diamonds and an octagonal sapphire.  The reverses of these links are enameled in black and white while the back of pendant is enameled with a tulip-pattern in red, white and black.