Granite Flask Vendor Recipe

Hi,
just zapped through the challenges and found the "Vendor Recipe" challenge where we should obtain a Granite Flask.
Only recipe for that I know of (from the wiki) is
Ruby Flask of Iron Skin
Sapphire Flask of Iron Skin
Topaz Flask of Iron Skin

Is that correct?
I must say, I am a new player, approaching level 70 these days, haven't ever played a map so far and know not very much about the game (yet), BUT...

this recipe appears to be almost impossible... I own each of the three flasks and tried to get "of Iron Skin" but I just blew up 150 orbs without luck on a single of them...

There must be a better way to get that modifier?

I think I am doing something wrong and appreciate any help :-)
It's one of two missing recipes for me... The Chaos Orb recipe is not a problem, I just need to keep playing until I have a full set of lvl 60+ rares, that's easy.
But this flask... meh

Cheers!

Yeah, you are right.
As mentioned in wiki: https://pathofexile.gamepedia.com/Granite_Flask
If you don't want to waste more orbs, you can set up your Loot Filter to Show these 3 flasks of Magic Rariry, identify them on pick up and drop/sell them afterwards if they are not "of Iron Skin".

Thanks!
I hoped for a shortcut and better way to get this recipe done, but at least now I know :-)

ty!
cheers

don't just roll alts until you get/find iron skin. hit the flask with an alteration when it has a suffix that is not iron skin. if it only has a prefix, slam an augmentation on it to see what the suffix is, as it could be iron skin

You can also obtain a unidentified magic Granite Flask by selling 5 magic Granite Flasks. It's much easier, just buy 5 of them and make them magic rarity.

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Iangyratu wrote:

You can also obtain a unidentified magic Granite Flask by selling 5 magic Granite Flasks. It's much easier, just buy 5 of them and make them magic rarity.

this!
this sounds good - thanks i'll try that!

"

Iangyratu wrote:

You can also obtain a unidentified magic Granite Flask by selling 5 magic Granite Flasks. It's much easier, just buy 5 of them and make them magic rarity.

Nice one. Not using that recipe often. I wonder if that recipe was intended to trigger the challenge or not.

I looked through each and every vendor in the first 9 acts (I didn't reach act 10 so far) but none sold a granite flask.

Has anyone a hint, where I can purchase them to try this out?

"

HaerionColdrock wrote:

I looked through each and every vendor in the first 9 acts (I didn't reach act 10 so far) but none sold a granite flask.

Has anyone a hint, where I can purchase them to try this out?

Vendors don't sell those.
Quest rewards\drop only.
(And, obviously, trading with other players can get you Granite flask(s))