Aquamarine + Emerald = Apatite, Weapon: Ranseur
Aquamarine + Amber = Citrine, Weapon: Lucerne Hammer
Aquamarine + Spinel = Kyanite, Weapon: Large Ice Crossbow
Aquamarine + Howlite = Moonstone, Weapon: Halberd
Aquamarine + Zircon = Serendibite, Weapon: Guisarme
Aquamarine + Evenkite = Prehnite, Weapon: Lance
Aquamarine + Sodalite = Tanzanite, Weapon: 
Emerald + Amber = Jade, Weapon: Greatsword
Emerald + Spinel = Aventurine, Weapon: Double-Bladed Sword
Emerald + Howlite = Diopside, Weapon: Lochaber Axe
Emerald + Zircon = Hematite, Weapon: Dual-Sided Sword
Emerald + Evenkite = Moldavite, Weapon: Voulge
Emerald + Sodalite = Chrysocolla, Weapon: 
Amber + Spinel = Spodumene, Weapon: Chain Mace
Amber + Howlite = Chrysoberyl, Weapon: Giant Flanged Mace
Amber + Zircon = Andesine, Weapon: 
Amber + Evenkite = Londonite, Weapon:
Amber + Sodalite = Warikahnite, Weapon:
Spinel + Howlite = Zirconia, Weapon:
Spinel + Zircon = Onyx, Weapon:
Spinel + Evenkite = Gypsum, Weapon:
Spinel + Sodalite = Jeremejevite, Weapon:
Howlite + Zircon = Aegirine, Weapon:
Howlite + Evenkite = Prasiolite, Weapon:
Howlite + Sodalite = Celestite, Weapon:
Zircon + Evenkite = Labradorite, Weapon:
Zircon + Sodalite = Benitoite, Weapon:
Evenkite + Sodalite = Chalcedony, Weapon:

Still working but may need some help. Running out of weapons since two people have swords, two people have spear type weapons, and two people have really big weapons (Gianter thing) making it hard to come up with new weapons and a crossbow is hard to fuse with anything and so is a cestus type thing. There are only so many weapons in existence people