Adamantine
To get the item, you will need to go to Long Horn Island which is located above Deling City, if you just go plain north from Deling City, you should come to a small yet long landpiece which is surrounded by shores. To fight the Adamantoise to get the item (you can either mug it or fight them until they drop it) run along the beach. Mostly, you will encounter the Fastitocalon, but just keep trying, and eventually, you'll encounter the Adamantoise. *Note* The Adamantoise looks like a turtle like creature, only bigger .The Adamantoise always fights with a partner, another Adamantoise.

Dragon Fang
You have two choices, either fight the Blue Dragonsfor the Dragon Fangs in Trabia Winter Island near the mountains (the mountain surrounding shumi village) or either fight a much tougher version of the monster at Island closest to Hell. The Blue Dragons are rare monsters at the Trabia Winter Island, but it's much easier over there. *Note* I suggest getting the Dragon Fangs from the Blue Dragons in Trabia Winter Island. Also , in Trabia Winter Island, you won't encounter and Blue Dragons unless you run close against the mountains.

Force Armlet
Rarely, monsters outside of Esthar (when the surface has turned red) Drop the so called item "Energy Crystal". 1 Energy Crystal can be refined into 10x Pulse Ammos, so
2 Energy Crystals is enough. *Note* You'll need Ifrits ability "Ammo RF" to get the Pulse Ammo.