HP of a Spiked Gauntlet, Gauntlet or Cestus

[Wolf Alexander Vituschek]

Since I am thinking about making an adamantine spiked gauntlet a bonded item for a char of mine:

How many Hit points (HP) does a standard/steel spiked gauntlet have?
Only RAW answers please.

Consider:

-It is neither a "light blade" (2HP), nor a "light metal-hafted weapon" (10HP) or "light hafted weapon" (2HP).

-Adamantine has HP/inch 40. Since there is no source that defines the thickness of a spiked gauntlet, there is no way to determine this RAW.

-If one would assume, that it has the same HP as medium armor, it would at least have 20HP. The problem is, I could also say that my gauntlet stems from a full plate (45HP).

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Also, even if we can determine the HP: In 3.5, one could not sunder armor.
Can you sunder armour in Pathfinder (in a combat situation)?
I cannot find anything about this in the books.

[Wolf Alexander Vituschek]

Is this too trivial?
Or too difficult to answer?

Come on...I believe in you guys :)

[blahpers]

RAW doesn't detail the hit points of every object. Your GM will have to make that call. As for me, I wouldn't give a gauntlet the same number of hit points as a full set of armor. I'd me more inclined to price similarly to other light weapons.

Yes, you can sunder armor.

PRD: Combat -> Sunder:

Sunder

You can attempt to sunder an item held or worn by your opponent as part of an attack action in place of a melee attack.

[Archaeik]

One way to look at it would be to count the gauntlets as armor with an AC bonus of 0.

Armor items have HP of 5x bonus. A bonus of 0 is usually counted as 1/2 for purposes of calculations, so 5 x 1/2 = 2.
Adamantine items increase HP by 1/3 (iron is 30/in, adamantine is 40/in). (5 x 1/2) x 4/3 = 3.

Otherwise, the closest thing they resemble on the chart is light blades.