Sorry for the delayed report. London is exhausting.
We arrived at the exhibition early, but they let us in immediately. Lots of visitors, but we could still set our own pace. It took us a bit more than three hours.
The exhibit was didactic and historical. The emphasis was on Gulf natural salt water pearls. Many Pinctada margaritifera and some Pinctada mazatlanica. Natural fresh water pearls from Scotland and the Americas were also shown. Some really huge pearls, but the most amazing were a large quantity of 1mm drilled pearls shown loose, in a multi-strand necklace, and in embroidery.
Huge amount of extravagant, hyper-expensive jewelry, sometimes with lots of diamonds in a supporting role.
As for cultured pearls, only Mikimoto got any credit at all. Considerable cultured FW showed up in modern jewelry. Strangely enough, although the show describes the massive Chinese pearl production as a danger to the industry, the poster and the cover of the catalog (see post number 1 above) shows a piece made entirely of cultured FWs.
And of course, the video on the creation of a pearl ended "a pearl is never caused by a grain of sand."