Rococo jewelry emerged in France and flourished from 1720 to 1770. Rococo jewelry is playful, lighthearted and asymmetrical. It was a reaction to the heavy rigid symmetry from the previous Baroque style.
What Rococo is known for:
Asymmetry and motifs from nature.
Airy Lightness
Setting Techniques.
Sadly, not a lot of Rococo jewelry survived museum collections because the jewelers of the 18th and 19th century routinely melted down old settings to reuse valuable stones.
This specific pendant showcases bows known in that time and they were enamelled. There are diamonds too and then the stunning sapphire drop. You can see this necklace at the V&A museum.