Mica appears 65 times at rank 1597 on female pets. The name reads in two directions simultaneously: as a variant spelling of the Hebrew name Micah (meaning "who is like God"), and as the mineral mica, the flaky, iridescent silicate that catches light and shimmers. Both readings work for a pet name.
The Mineral Aesthetic
Naming pets after minerals is a small but coherent trend: Jasper, Opal, Onyx, Flint. Mica fits this category with a softer, more iridescent quality than the harder stone names. The mineral has a shimmer that maps onto cats with particular elegance. It belongs near Opal and Pearl in the mineral-feminine name set.
Sound and Breed Fit
MEE-kah is two syllables with a soft ending, easy to call and easy to learn. The name works equally on dogs and cats. Whippets and sleek cats with luminous coats carry the mineral association most naturally. The human name comparison is at /names/mica and the Hebrew form at /names/micah.
The Counter-Reading
Mica will constantly be mistaken for Mika or Micah by anyone reading rather than hearing it. The spelling clarification is ongoing. Owners who chose it usually did so because they liked the mineral reading, and the mineral reading requires the spelling to be visible to land correctly.