Rococo, in a historical sense, from wikipedia (oh font of all knowledge!), Rococo is the later Baroque period, or one might say *post-baroque*. which these pearls definitely are, in the way that *post-modern* draws from modern, yet transforms and transcends it.
definitionally, and also from wikipedia, "The word Rococo is seen as a combination of the French rocaille, meaning stone, and coquilles, meaning shell, due to reliance on these objects as motifs of decoration.[3] The term Rococo may also be interpreted as a combination of the Italian word "barocco" (an irregularly shaped pearl, possibly the source of the word "baroque") and the French "rocaille" (a popular form of garden or interior ornamentation using shells and pebbles), and may be used to describe the refined and fanciful style that became fashionable in parts of Europe during the eighteenth century."
what more fitting term than rock-pearls! or, Rococo!