Real spirit orbs are very rarely seen, and emit a glow that's visible to the naked eye.
Contrary to popular belief, the "orbs" seen on digital photos and videos today are nothing more than dust particle artifacts caused by the way digital cameras process light information. They range from one or two to a lot. Somewhere someone got the notion that dust artifacts are spirit orbs, but that has since been debunked and disproven many times over.
As I said, real spirit orbs are rare - if you ever see one you'll know. Consider yourself fortunate and in rare company if you do.
_______________________________________________________________________
to really answer your question, orbs are the premature stages of a ghost that appear just after the person dies, that is, if they to intend to stay on earth to complete an unfinished task. Soon after they are on earth as an orb for awhile, and gain enough energy, they become full bodied ghost.
Orb is another word for sphere, usually. It is a shape, not a specific object made of a specific material.
Palkia's orb is the lustrous orb.
blue orb for groudon and red orb for kyogre
The finest orb is the Life orb to be held by Arceus
a luner orb (also known as lunerios orbios) is an orb from the moon a luner orb (also known as lunerios orbios) is an orb from the moon
The shadow orb is an orb that makes a certain pokemon more powerful
In HeartGold you get a blue orb and in SoulSilver you get a red orb
in soulsilver you get the red orb in heartgold you get the blue orb
The Orb was created in 1988.
First of all, they are called the Lustrous orb and adamant orb. The adamant orb, when given to Dialga, boosts his power. Likewise the lustrous orb boosts the power of Palkia.
the red orb gives you the chance to catch groudon and the blue orb gives you the chance to catch kyorge.
Let Palkia hold the lustrous orb, and let Dialga hold the adament orb. It boosts their special moves' damage.
There's A Room In Mt.Coronet That Has The Adamant Orb And The Lustrous Orb.