Alright guys after reading everything I've got answers.
First off ++ armor doesn't exist. If anyone says otherwise, they're pulling your leg. Next, fusion stones are dropped at random. Doesn't matter where you go on the map, it will ALWAYS be random. Like other users have suggested, just spam the first area on the honor stage and that'll drop plenty along with keys. Next, I have not heard of anyone creating Spectral Captain or the Dark Prince's armor through fusion so until anything is confirmed it can only be created through forging it from materials. Next, the fire samurai is NOT Flamestorm. Flamestorm is Fire/Wind while the samurai is Fire/Spirit. Also the samurai armor is called Embersteel and I recently just made it through fusion [Dragonflame (LV1)+ Mystic (LV1)]. Next, DO NOT FUSE THE DARK PRINCE ARMOR AND STARMETAL. Nuff said. Next, for the person who got Monstrous Garbs instead of Flowstone, that happens. Since they share elements it's likely for either to be created OR even Crius Armor (a personal favourite of mine). Finally, I just started to hunt the jewels (I've been distracted lol) so it'l probably take awhile BUT having powerful friends help big time. Just don't let your own knights take a backseat. Train their armors, make them diverse, and come up with a plan of attack. You'll get the jewels in no time from there
If anyone needs anything just ask (my knowledge of the game is pretty vast so far and is continuing to grow). Fusion combinations, strategies, whatever, don't be afraid to ask. PS: Slaygar good job with holding down the fort here!