Answer:
   
   Yemenite Jewery didn't have the same level of communiation or mixing
   with the other communities. Until the 19th and early 20th century,
   they had a pretty uniform, Rambam-based custom. Trade with Syria
   brought with it the Kabbalistic ideas from Sefad, causing a battle
   much like the one seen in Ashkenaz when Chassidus started. When they
   came to Israel they were in two basic camps (with different flavors
   based on city of origin): Baladi (national) custom and Shaami (Syrian;
   i.e. the kabbalistically influenced import from Sepharad, Safed, and
   Syria).

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