Pearl of Yu'lon

One of the common tier items in Pandaren Archaeology.
Requires 60 Pandaren Archaeology Fragments.
Keystone: Pandaren Pottery Shard

Common tier Pandaren items:
Apothecary Tins
Carved Bronze Mirror
Pandaren Game Board
Edicts of the Thunder King
Empty Keg of Brewfather Xin Wo Yin
Gold-Inlaid Porcelain Funerary Figurine
Pearl of Yu'lon
Standard of Niuzao
Twin Stein Set of Brewfather Quan Tou Kuo
Walking Cane of Brewfather Ren Yun

Rare tier Pandaren items:
Spear of Xuen
Umbrella of Chi-Ji

The archaeology finds, currently in MoP BETA (notice that they are right now placeholders, and may change in the future):

Common

• 
  
• Apothecary Tins,
  that creates [item=79903]
• 
  
• Carved Bronze Mirror,
  that creates [item=79901]
• 
  
• Pandaren Game Board,
  that creates [item=79897]
• 
  
• Cracked Mogu Runestone,
  that creates [item=79909]
• 
  
• Edicts of the Thunder King,
  that creates [item=79913]
• 
  
• Empty Keg of Brewfather Xin Wo Yin,
  that creates [item=79900]
• 
  
• Gold-Inlaid Porcelain Funerary Figurine,
  that creates [item=79902]
• 
  
• Iron Amulet,
  that creates [item=79914]
• 
  
• Manacles of Rebellion,
  that creates [item=79908]
• 
  
• Mogu Coin,
  that creates [item=79916]
• 
  
• Pearl of Yu'lon,
  that creates [item=79904]
• 
  
• Petrified Bone Whip,
  that creates [item=79911]
• 
  
• Standard of Niuzao,
  that creates [item=79905]
• 
  
• Terracotta Arm,
  that creates [item=79910]
• 
  
• Thunder King Insignia,
  that creates [item=79912]
• 
  
• Twin Stein Set of Brewfather Quan Tou Kuo,
  that creates [item=79898]
• 
  
• Walking Cane of Brewfather Ren Yun,
  that creates [item=79899]
• 
  
• Warlord's Branding Iron,
  that creates [item=79915]
• 
  
• Worn Monument Ledger,
  that creates [item=79917]
• 
  

Rare

• 
  
• Quilen Statuette,
  that creates [item=79918]
• 
  
• Spear of Xuen,
  that creates [item=79907]
• 
  
• Umbrella of Chi-Ji,
  that creates [item=79906]
• 
  
• Anatomical Dummy,
  that creates [item=79919]
• 
  

Currently, no sign of epics, but again that may change as Beta progresses