Vintage Sterling Siam Niello Necklace. Very Rare.

Beautiful sterling vintage aqua Neillo Sterling Necklace. To make niello jewellery, a highly trained artisan carves out the metal so the it has a raised border and raised character, picture or pattern. The hollow area (ie the bit they have just carved out) is then filled with the niello compound, and baked in an oven until hard and set. The jewellery is given a final buff and polish and any final details to the characters are added by engraving techniques.