As Tolkien explains in some length that the pure idea of perservation of the state of affairs is sinfull in a world that is based on change/progression, I do not think that neither the Silmarills nor the Rings of Power needed any farther taint. The concept that leads to the making of both was a step away from a true belive and trust in Ilúvatar.
But since that 'road of sins' is slipery and step, these artefacts rapidly collect more taints when used or desired.
Respectfully
Findegil
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