Aigrette, brilliant-cut diamonds, turquoises, an emerald and other coloured stones, probably made in France, about 1810. Aigrette, brilliant-cut diamonds, turquoises, an emerald and other coloured stones. Some added subsequently (probably between 1820 and 1835) to increase the polychromatic effect of the piece.  Diamonds, turquoises, an emerald and other coloured stones.