The only known natural substance that block the optic blasts of Cyclops without damage.[1] The crystal resonates at the same frequency as the psionic field that protects both Cyclops and Havok from their own powers.[2]

Used in:


  • In New X-Men #131, Cyclops explains that light turns yellow in the Ruby-Quartz shield of his visor. However, a flashback in Astonishing X-Men Vol 3 #14 has Scott mention that he sees things tinged with red. This second account is reinforced in Champions Vol 2 #12, in which a series of panels shown from Cyclops' point of view are colored in shades of red.

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