Morganite is the pink to purplish variety of Beryl. Morganite was found in 1910, and later named by George F. Kunz, after the renown banker J.P. Morgan. Other than Red Beryl, Morganite is the least common of the Beryl family. The main sources of Morganite are Brazil, Madagascar, Afghanistan, Pakistan, California, and Maine.
* Muscovite >
Muscovite is the most common form of mica. Its name is derived from “Muscovy Glass”, which describes thick sheets of transparent mica that were once used as a glass substitute in Russia. Because of Muscovite’s abundance, its presence is usually lacking in collections except for it being an accessory mineral to other minerals. However, there are certain interesting formations and colors which are very aesthetic, and those forms are well-represented in collections. Muscovite can come in enormous crystal groupings that can weigh several hundred pounds. Thin sheets can be peeled off as layers, and the thinner a layer is peeled the greater its transparency becomes.
* Nepheline >
Nepheline is a rock-forming mineral. It is usually massive and in unattractive specimens, though a handful of localities have produced well-crystallized examples of this mineral. Nepeheline is a primary constituent of nepheline syenite rocks and nepheline syenite pegmatites, forming in alkali-rich plutonic environments often together with a host of rare minerals.
* Neptunite >
Neptunite is a relatively recent mineral, having been first discovered only in the early 1900’s. It is named after Neptunus, the Roman god of the sea, and its etymology is derived from its similarity to Aegrine, which was named after the Norse sea god. Neptunite forms a solid solution series with Manganoneptunite, which is the manganese-dominant variant of Neptunite, whereas Neptunite is the iron-dominant member.
* Onyx >
The best description of the gemstone Onyx would be a solid black or sometimes banded variety of Chalcedony. Onyx is the most well known of the black gemstones. Onyx has been used as jewelry throughout antiquity, and still today. Onyx can be found in Brazil, India, and Uraguay.
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