A word first appearing with the gloss “jewel, precious thing, treasure” in The Etymologies of the 1930s under the root ᴹ√MIR (Ety/MIR). It appeared regularly in Tolkien’s later writings with the same etymology and glosses like “gem”, “jewel” and “precious thing”, and it was a common element in names. In one place Tolkien said it could also be used as an adjective “precious” (PE17/165).
Quenya
mírë
jewel
mírë
noun/adjective. jewel, gem, precious thing, treasure; precious
mírëa
adjective. jewelled, jewelled, *gemmed
An adjective form of mírë “jewel” (PE17/83).
Conceptual Development: The Qenya Lexicon of the 1910s had ᴱQ. sinqevoite “gemmed”, an adjectival form of ᴱQ. sink (sinq-) “mineral, gem, metal”
Elemmírë
star-jewel
Elemmírë noun *"Star-jewel" (elen + míre, notice assimilation nm > mm), name of a star/planet (possibly Mercury, MR:435, where the spelling used is Elemmirë); also name of an Elf. (SA:mîr)
Artamir
noble jewel
Artamir masc. name *"Noble jewel" (Appendix A); cf. mírë.
raina
smiling, gracious, sweet-faced
raina (2) adj. "smiling, gracious, sweet-faced" (VT44:35, PE17:182). Cf. raita #3.
mírë noun "jewel" (MIR, SA:mîr), "a treasure, a precious thing" (PE17:37).Cf. Elemmírë; short form -mir in Tar-Atanamir (SA:mîr); see also Artamir.