Insignias...

Can somebody answer my questions please

1. Can insignias be overwritten with another insignia?
2. Can an Elementalist use Radiant insignia?

If you go to the rune merchant and select a profession on the tabs it will show just profession runes and insignias. If you click on the tab that does not show a profession it shows all insignias that anyone can use. Now to answer your questions

1. Yes I believe it works like the others and you can apply one over the top of another but you will lose the original one applied
2. Yes Elementalist can use a Radiant insignia (But isn’t kind of a waste? You have energy storage)

Thanks Painbringer!

(And for the Radiant thing...I always thought that the armor+10 against only one type of damage, and the armor+10 against only elemental damage was a little bit restricting; I prefer something that can work anywhere, so I equip all my characters with Radiant insignia).

Keep in mind that you can't overwrite built in insignias on canthan or tyrian armour. Only Elonian armour can take insignias.

Now all armour can take them

Anyone know anything about why monk and necro tattoos do not get the radient insigs?

try puting prismatic on your ele. +5 armor no matter what the build.

The L20 collector ones don't, all the others should, as for why, that's how anet made it, nobody here will know their reasoning.

There was a post in another thread that made a lot of sense. The idea was that insignia aren't allowed in endgame collector armor because it would really hurt the demand for crafted armor. Think about it...would you rather fork over a couple platinum or spend ten minutes collecting a handful of jade mandibles? I doubt ANet would want for the long-awaited changes to Prophecies armor to be undermined by also providing such inexpensive alternatives.

Also, another question now; do insignias stack?

I though Survivor and Radiant do, but I'm not sure about the other ones.

Yes, they stack, except for the ones that say, non-stacking, like bloodstained insignia.

if you're looking for a +10 armor insignia that's almost always active, try blessed: +10 armor while enchanted. as an ele, you'll pretty much always have an attunement up so it works out fine.