"Vampiric Blade

Incant: “I Invoke Necromancy to create a Vampiric Blade.”

Duration: 1 hour

Description: This spell summons a magic dagger (purple) that gleams with Necrotic energy. The weapon deals “1 Magic Body Drain” and heals the caster for the equivalent amount of damage dealt. In order to heal the wielder, Body damage must be done with the strike. This damage cannot be increased or augmented by any means and no skills may be used with the blade. The dagger, if wielded by someone other than the caster, or if it’s dropped, disarmed, destroyed or dispelled will dissipate. The caster is responsible for bringing their own purple dagger phys-rep; the spell will fail without the proper rep."

"Claws

Incant: "I invoke Nature to grant Claws."

Duration: 1 hour

Description: This spell causes the target to grow a vicious set of claws. These claws act as natural weapons, cannot be disarmed or shattered and grant the natural ability to use them. They swing for 2 Normal and may be used to block, as well as attack. Strength bonuses, either natural or spell-granted, will add to the damage as well,but other enhancers do not affect the damage of the Claws. If this spell is cast on another the caster is responsible for providing the weapon reps or the spell fails, likewise if the claw reps are dropped the spell will end. Magic may be cast while claws are active, however spells cannot be touch-cast through the claws. You may temporarily release a claw rep in order to cast spells via packets. The Claws spell is stackable. If a second set is cast while the first is still active, the duration will not reset but the claws will gain +1 damage and become silver. If a third set is cast while the second is still active, they again another +1 damage and become magical. Additional castings will each add another +1, but the duration will always be equal to the original casting."

"Psionic Knife

Incant: “By force of will I create Psionic Knife.”

Duration: 1 hour

Description: This spell focuses the caster’s mental energy into one small, blade-shaped force, which can be used in combat. Once the spell is cast, the caster may wield a dagger-sized phys-rep (blue) swinging for 2 Magic. This does no extra damage to demons, but does affect Undead. While this spell is in effect, the caster may not cast any spells. At any time during the duration of this spell, the caster may channel any Psionic spell currently in memory through the weapon by calling “Spellstrike <Spell-Name>”. This reduces the damage that the knife can swing for by 1. If the damage of the knife is reduced to zero, the hour runs out, or the caster wishes, the spell ends. Should the caster drop the weapon or become disarmed, the weapon will dissipate and the spell will end. The caster is responsible for bringing their own blue boffer phys-rep, the spell will fail without the proper rep. Summoned weapons may be used with natural weaponry like Savar’Aving Claws, but will not grant the user the Florentine skill needed to fight with both. Purchasing an Exotic Weapon Specialization: Summoned Weapons will increase the damage of any weapon conjured by this spell by 1 per purchase, but the summoned weapon will still dissipate when a number of spell-strikes equal to its base damage are used."

"Psionic Blade

Incant: “By force of will I create Psionic Blade.”

Duration: 1 hour

Description: This spell acts exactly as the Psionic Knife spell, except as follows: the caster may use a phys-rep up to Sword size, the Psionic Blade’s starting damage is 4 Magic and the caster may spell strike any spell memorized regardless of Sphere. Should the caster drop the weapon, or become disarmed, the weapon will dissipate and the spell will end."

Question

Claws cannot be shattered, but it seems Vampiric Blades can, which suggests to me that there is no standard rule for whether summoned weapons can be shattered or not. Can Psionic weapons be shattered, via Weapon Break or similar?