A Few Gems

Woo! Time for another theoretical names post (I have a lot of fun with these).
Lots of gemstone- & other mineralogical-type names are/have been used in English. Ruby, Jasper, Jade, Opal, Pearl, Amber, Emery, & Coral are all pretty recognizable, and several more have been in rarer use as well--Amethyst, Garnet, Celestine, Diamond, Emerald, Sapphire, Topaz, Hyacinth, Beryl.
And so, here are a few more gems & minerals that could be used as names, IMO.

• Agate (AG-at, English; ah-GAHT, French)
• Ametrine (AM-eh-treen)
• Barytes (bah-RYE-teez) [archaic]
• Cadmia (KAD-mee-ah) [archaic]
• Chalcedony (kal-SED-oh-nee)
• Citrine (SIT-reen, SIT-rin)
• Covelline (KOH-vel-leen)
• Euclase (YOO-clays)
• Galena (gah-LEE-nah, gah-LEH-nah)
• Jacinth (JAY-sinth, jah-SINTH)
• Olivine (OL-ih-veen)
• Peridot (PEHR-ih-doh, PEHR-ih-dot)
• Tourmaline (TOHR-mah-leen, TOOR-mah-leen)

Gemstones in other languages (asterisks indicate established names):

• Ágata (AH-gah-tah, Spanish, Portuguese, Galician)--"agate". Italian is Agata (ah-GAH-tah) [also a form of Agatha].
• Ametista (ah-meh-TEES-tah, Italian)--"amethyst". Spanish is Amatista.
• Azurita (ah-soo-REE-tah, Spanish)--"azurite"
• Berillo (beh-REEL-loh, Italian)--"beryl"
• Biyu (bee-yoo, Mandarin [碧玉])--"jasper" [lit. "blue jade"]
• Lazurit (lah-ZOO-reet, Russian [лазурит])--"lapis lazuli". Japanese is Ruri (roo-ree) [ 琉璃--lit. "sulfur(?) glass"]
• Maragda (mah-RAHG-dah, Catalan)--"emerald". Spanish & Portuguese is Esmeralda* (fem).
• Mercan* (mehr-JAHN, Turkish, feminine)--"coral"
• Meripihka (MEHR-ih-pihh-kah, [the H is not silent] Finnish)--"amber"
• Nilam* (NEE-lam, Hindi, unisex)--"sapphire". Portuguese is Safira.
• Olivina (oh-lee-VEE-nah, Italian)--"olivine, peridot"
• Rubin (roo-BEEN, Czech, Danish, Dutch, German....)--"ruby". Italian is Rubino* (masculine).
• Yeşim* (yeh-SHEEM, Turkish, feminine)--"jade". Italian is Giada* (JAH-dah, feminine); Russian is Nefrit (NEH-freet) [нефрит].