It seems that the recipes for the various crafted level 55 pink Int weapons all have the base weapon used to craft mixed up.
Enchanted Gem Star Wand calls for MM Gem Blast Staff
Enchanted Gem Blast Staff calls for MM Gemstone Staff
Enchanted Gemstone Staff calls for MM Gemstone Wand
Enchanted Gemstone Wand calls for MM Gem Shard Wand
Enchanted Gemstone Shard calls for MM Gem Star Wand