Gemstones By Lee Groat Summary
Spencer Silver Dr. Hallie J. Sims EES:1030AAA 4 April 2016 Analysis of “Gemstones” According to Lee A. Groat, the name “gemstone” was first coined by the jeweler Tiffany & Co. in 1969. In America, jewelry is an extensively purchased product. Americans buy jewelry for birthdays, weddings, religious ceremonies, graduations, and even sporting events such as the Super Bowl. However, the jewels contained in numerous pieces of jewelry are highly valuable due to their rarity. The article, “Gemstones” by the author, Lee A. Groat, explores why gems are so rare and why the gems are important to scientists particularly. The article’s paragraphs are organized according to the gem. Gems are rare and this rarity increases their value. Gems are scarce …show more content…
In order to create emerald, one needs beryllium and, chromium or vanadium. However, Groat points out that beryllium is mainly found in rocks that form within the continents while chromium and vanadium form in volcanic rocks linked with mid-ocean ridges. This shows how rare emeralds are because of the uncommon geological and geochemical conditions that emerald forms under. Groat goes on to explain that other geological events involving tectonic plates are also involved in the deposits of emerald. Goat describes a theory that has often been critiqued by other researchers, the regional-metamorphic origin. Critical researchers argue that the classic pegmatite model could still apply to this origin, meaning that it would not stand alone. Next, Groat defines, “other beryls.” These beryls would include aquamarine, heliodor, and others. The most important piece found in the section of beryls is related to the mobilization of beryllium. Red beryl is supposedly derived from rhyolite. The mobilization of beryllium is caused by fluorine-rich gases from cooling rhyolite mixing with vapor from heated groundwater. The vapor and fluorine-rich gases form a supercritical fluid. The temperature and threshold proved to be unique because the fluid could seep through solids, similar to a gas. However, it could also dissolve materials as if it were a
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The Golden Goblet By Eloise Jarvis Mcgraw
760 Words | 4 PagesGolden Goblet Argumentative Essay The Golden Goblet is written by Eloise Jarvis Mcgraw which illustrates a story of a little boy who lived in Egypt in ancient times, named Ranofer, who lives with his evil half brother, Gebu, who had initially been stealing from a goldsmith shop, where Ranofer had worked. Later, Ranofer had confronted Gebu about this stealing, he had gotten beat for it, but at least Gebu had stopped stealing, at least that’s what Ranofer believes. The most important event in the golden goblet occurred when Ranofer is in the stone cutting shop and was thinking about how Gebu suddenly had grown richer, he then noticed how little his coppers would’ve affected this sudden growth of wealth, and soon he has a turning point, Gebu was stealing again, this is the most important event because it creates a domino effect, which sends off Ranofer to search Gebu’s room, while looking he finds the golden goblet, that then leads to Ranofer noticing this had to have come from a tomb so he then follows Gebu on the night of the Festival, when the Nile floods and when Gebu
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