I believe that there are tons of Sugilites, Opals, Alexandrites, Smoky and Rainbow Quartzes, Garnets, and Malachites that are singular Gems in Homeworld.

They don't exactly look anything like the fusions we know, but they have the same colors.

And I believe your idea too, Opals being rare on Homeworld. I have this headcannon that Opals are basically second to Diamonds, and are battlefield generals. As in instead of just giving orders from a Diamond's throne, Opals are out with the Quartz Soldiers fighting.

@KinguvX I agree because if you think about it there's so many possible combinations with Gems we already have and so few Gems that there'd have to be single versions of gem fusions. I'll be back with the exact number of combinations later.

Having Opals being bettlefield generals sounds GREAT. I wonder if they would all have a bow and arows like the combination of Amethyst's whip and Pearl's spear. 

No, no they definitely wouldn't. Remember that all Gems have different weapons, so every Opal ever wouldn't have a bow.

Also, remember that our Opal is just one Opal. All the other fusion Opals would have other weapons.

Like, that is like saying all Garnet would have gauntlets, even though every single Garnet fusion wouldn't have gauntlets. A fusion between a Sapphire and a Ruby who didn't have a gauntlet wouldn't form a gauntlet, so not every single singular Garnet would have a gauntlet.

That is true, I was thinking that if there existed singular-gem Opals they would still have a bow, but I don't particularly believe in the "single-gem fusions" theory, and you made a pretty good point, "our" Opal only has a bow because it's the fusion of Pearl's spear and Amethyst's whip.

Now I want to know what would happen if Sapphire/a Sapphire would fusion with, say, Eyeball. Would that Garnet have a big chisel/knife/sword?? Heh... 

Well, that would mean both Sapphires didn't have a weapon. Our Garnet has a more advanced version of Ruby's gauntlet only because Sapphire doesn't have a weapon, but just because she doesn't doesn't mean other Sapphires don't.

If they were Homeworld Sapphires, they wouldn't have a weapon nor would have any reason to try and summon one. Rubies and Quartzes easily summon weapons because they were meant to, but Pearl couldn't summon her spear for thousands of years, it's because Pearls weren't meant to summon one.

Now, going with the idea that the Sapphires don't have weapons, I'd imagine that their fusion would have a machete like weapon.

Maybe Sapphires are like Era 2 Peridots. They aren't supposed to be able to summon a weapon, since they aren't made for the purpose of fighting. However, since ｢Summoning a Personal Weapon｣ is in the core of the very nature of a Gem, they have the potential of doing so, if they train properly (akin to a human working out to get built)

Maybe our Sapphire has her own weapon, but we never see it because she is fused with Ruby all the time and they always summon Garnet`s gauntlets. Furthermore, her fusion with Ruby (a warrior gem) acted as the catalyst for the summoning of said weapon; but since she only started to fight in the Rebellion after becoming Garnet and stayed Garnet afterwards, she may not know that she has her own weapon.

Yeah, all Gems can summon weapons, it's just that most Gems don't need to. Pearl had to practice for years to summon her spear, it's because Pearls aren't meant to fight, just like Sapphires. Sapphires are rare and royal Gems that don't need to fight, they have guards. *The Answer*

Oh, and I'm pretty sure it was confirmed our Sapphire doesn't have a weapon. Garnet's weapon is just an advanced version of Ruby's gauntlet and Sapphire's being.

In the event two Sapphires trained for thousands of years and we're both able to summon a weapon, and were to fuse with Eyeball, they'd get a brand new weapon. But if the Sapphires weren't able to summon weapons, the weapon would be an advanced chisel.

Sorry, I explained myself wrong!!! I'm not saying she can summon her weapon!!! What I meant is that she only can do it indirectly, through Garnet's gauntlets. Her weapon "is" there, as a component of the Fusion weapon, but she cannot summon it by herself alone, as she has only ever fought as Garnet.