Use the following gems to create the corresponding weapon upgrade:

Imbue
  Arrow Sight: 1 Steel; 1 Pure Sapphire 
  Balance: 1 Amber; 1 Pure Gold 
  Berserk: 1 Sapphire; 1 Pure Malachite 
  Concentration: 1 Ruby; 1 Pure Topaz 
  Fire Seal: 3 Moon Silver; 2 Moon Ruby; 1 Phoenix Feathers; 1 Star Ruby 
  Flash: 9 Star Topaz; 7 Dragon Scales; 5 Dragon Hair; 3 Dragon Claws 
  Guardian Spirit: 1 Moon Topaz 
  Ice Seal: 4 Moon Crystal; 2 Moon Jade; 1 Dragon Beard 
  Leech: 1 Agate; 1 Jade; 1 Pure Crystal; 1 Pure Ruby 
  Lightning Seal: 4 Moon Sapphire; 2 Star Diamond; 1 Dragon Liver 
  Mystic Seal: 2 Gold 
  Phantom Hand: 1 Ruby; 1 Pure Diamond; 1 Pure Steel 
  Swift Strike: 2 Moon Amber; 1 Moon Malachite; 1 Tiger Claws; 1 Dragon Jaw 
  True Musou: 2 Silver; 1 Moon Steel; 1 Moon Diamond 
  Wind Seal: 2 Moon Agate; 1 Star Malachite; 1 Dragon Heart 
Special
  Blizzard: 4 Star Jade; 4 Star Topaz; 1 Lion Tail; 1 Dragon Liver 
  Brace: 1 Ruby; 1 Pure Malachite 
  Double: 1 Malachite; 1 Pure Ruby 
  Falcon: 2 Star Crystal; 1 Star Gold; 1 Dragon Hair; 1 Dragon Tail 
  Fire: 2 Sapphire; 1 Pure Malachite; 1 Star Agate 
  Flames: 5 Star Steel; 2 Star Silver; 1 Phoenix Feathers; 1 Dragon Eye 
  Focus: 2 Jade; 1 Pure Gold; 1 Pure Crystal 
  Hide: 2 Diamond; 1 Pure Gold 
  Ice: 2 Gold; 1 Amber; 1 Pure Jade 
  Recover: 2 Star Amber; 2 Star Diamond; 1 Dragon Jaw; 1 Dragon Beard 
  Rockfall: 2 Ruby; 1 Pure Topaz; 1 Star Sapphire 
  Steal: 1 Topaz; 1 Pure Agate 
  Stun: 2 Agate; 1 Pure Ruby; 1 Moon Gold 
  Taunt: 1 Crystal; 1 Pure Silver 
  True Speed: 1 Malachite; 1 Pure Amber