A neologism for “hyacinth” as a jewel coined by Helge Fauskanger in his NQNT (NQNT), a combination of linquë “hyacinth (plant?)” and mírë “jewel”.
Quenya
linquë
hyacinth
linquemir
noun. hyacinth [jewel]
Elements
Word Gloss linquë “(leaf of a) hyacinth, (leaf of a) hyacinth, *grass or grass-like leaf” mírë “jewel, gem, precious thing, treasure; precious”
iasintë
noun. hyacinth
linquë (3) noun "hyacinth" (plant, not jewel) (PE17:62). The wording in the source is not altogether clear; it is said that the word lassë (leaf) "would not e.g. be used of leaf of a hyacinth (linque)". If linquë is not the term for a hyacinth, it must refer to the kind of leaf a hyacinth has. Compare #2 above.