Today, 1st Feb, JAL finally announced its Joining to Oneworld on 1st April.
JAL's web site states:
See
http://www.jal.co.jp/en/jmb/oneworld/
About Elite Status:
Emerald =
JMB Diamond (100,000+ FOP, or 120+ flights) or
JGC Premier (JGC member with 70,000+ FOP, or 80+ flights)
Sapphire =
JMB Sapphire (50,000 FOP, or 15,000 FOP with 50+ flights) or
JGC Sapphire (JGC member with JMB Sapphire status)
JGC member with 20,000 FOP in previous year.
Ruby =
JMB Crystal (30,000 FOP, or 10,000 FOP with 30+ flights) or
JGC member
FOP = Fly On Point = 1 points for international flight/2 points for Japan Domestic flight.
JGC = JAL Global Club, Annual fee based credit card.
JGC Premier is one of easiest OW emeralds to get, isn't it ?