What are some nine-letter gemstones?

34 of the 170 gemstones in Icillion have exactly 9 letters, for example Turquoise, Moonstone and Tanzanite.

Which nine-letter gemstones start with M?

M is the most common first letter here, with 5 names, such as Malachite, Marcasite, Moldavite, Moonstone and Morganite.

Science · lists

34 nine-letter gemstones in alphabetical order, from “Almandine” to “Zultanite”. Each one counts as an answer in Icillion.

34 of the 170 gemstones have exactly 9 letters (20%).
Most start with M (5), T (5) and S (4).
Only names of one word are counted, and only their letters: spaces, hyphens and apostrophes are not.

What are some nine-letter gemstones?: 34 of the 170 gemstones in Icillion have exactly 9 letters, for example Turquoise, Moonstone and Tanzanite.
Which nine-letter gemstones start with M?: M is the most common first letter here, with 5 names, such as Malachite, Marcasite, Moldavite, Moonstone and Morganite.

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