A Portuguese or Iberian emerald and diamond stomacher brooch, c.1750-1780

A Portuguese or Iberian emerald and diamond stomacher brooch, c.1750-1780,
with a foliate rectangular plaque top section. Flower heads, rectangular step cut or flat cut emeralds in gold collets with crimped borders. Silver petals rub set with rose cut diamonds to a gold crimped edge, with silver sprays similarly set with gold wire beads and vines. A detachable spearhead plaque below, with detachable swags at each side. A detachable pendant below with a bow surmount, an oval frame and giardinetti articulated pendant centre, all similarly set with emeralds and diamonds. All closed back gold settings with a brooch pin and later 'C' catch. Tested as approximately 18ct gold and silver. 156 x 72mm approximately
Estimated at £6,000 - £8,000

Condition report:
Patinated silver. One emerald may be a replacement.
One emerald nibbles/chips to cover under 10x magnification.
Some facet edge wear.
Replacement 'C' catch.
Tarnish to reverse. Originally there may have been some outer pendant drops.
Dents to back of one setting.