Let’s store a spell in a friendship bracelet!

Spell Storing Jewelry

This normal looking jewelry looks like any other basic store piece but it’s also built continuing a custom magic matrix that holds a single spell. As a swift action, you can cast the spell using any attacks, feats, and saves of the caster. The jewelry does not come with a spell in it but any spell may be cast into the jewelry. Once the spell is cast the jewelry degrades and falls apart

 Spell Storing Jewelry, Mk 1

Level 1; Price 50; Bulk L

This may store up to a level 2 spell

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 Spell Storing Jewelry, Mk 2

Level 5; Price 425; Bulk L

This may store up to a level 4 spell

 Spell Storing Jewelry, Mk 3

Level 9; Price 1,950; Bulk L

This may store up to a level 6 spell

Thoughts?