- a "twist" would occur when a long double strand necklace was wrapped around the neck twice
- 2 strands with the same number of pearls will overlap or twist, even more so 2 sets of 2 strands with the same number of pearls each (55+55+56+56)
- In that earlier thread Arthur and Baxter posted photos of QE at Covent Garden in 2012 and of QEQM during a visit to the United States in the 1950's, both of them wearing three strands of pearls with (presumably) a ruby clasp. What strikes me in these photos is that the bottom strand seems not to be connected to the clasp which means it could be either a single strand worn without clasp (or with an extra clasp) or that a two strand pearl necklace has a short and a long strand and the long strand is worn twofold.