A Belle Époque diamond brooch, circa 1900. The horseshoe millegrain-set with rose, old brilliant, single and brilliant-cut diamonds, the whole capped by a fan and brilliant-cut diamond surmount, converted from a hair ornament.
A late 19th / early 20th century diamond and sapphire brooch. The detachable heart-shaped pendant centrally-set with an oval-cut sapphire within a graduated rose-cut diamond surround in foiled closed back settings, to a later reverse with engraved motif, suspended from a rose-cut diamond bow surmount, Dutch marks, 5.0cm long. Maker's mark JRS
Diamond and Enamel Brooch, Russian, circa 1880. Designed as a six-pointed star within a circle enhanced with bow-knots and florets, decorated with segments of translucent orange enamel over a guilloché ground and set with numerous old-mine diamonds, mounted in gold and silver.
Gold pendant, the black enamel border set with eight table cut diamonds in quatrefoil collets, alternating with gold and black enamel quatrefoils, all edged with gold balls filled with black enamel projecting outwards, a hanging pearl below and a suspension loop above The back is enamelled black with a military trophy- gun, halberd, sword, helmet, powder flask ,drum- within a scrollwork border.
Blue guillioche enamel Lover's Eye pendant with diamonds. Popular through the Georgian era, a Lover's Eye was a way to commemorate a clandestine love when two people could not be together for social or religious reasons. Read more about it here http://www.jewelrynerd.org/blog.html