Essay on The Unique Characteristics of Rubies

Jade Stones “nephrite” are a mineral composed of magnesium, iron, and silicate of calcium. Usually, they are formed through extreme heat and pressure known as metamorphism. Surprisingly, it can be found on every continent in the world, including countries like New Zealand, Brazil, China (Sinkiang), Canada, Zimbabwe, and the United State. It can be found in serpentine rock, by mining, alongside riverbanks, and seashores. Due to its composition these stones are shaped and polished before it is used in massage ("Nephrite Jade Gemstone Information", 2014).

Rose quartz is a mineral composed of oxygen and silicon with the chemical formula SiO2. It is a 7 on Mohs scale of hardness just like any other quartz.Its central gravity is 2.63-2.65. Rose quartz transparency is translucent to transparent. Rose quartz has a vitreous luster and its mineral class is quartz.It is the most abundant mineral found on earth mostly found in the earth's crust.(https://www.crystalvaults.com/crystal-encyclopedia/rose-quartz)

Despite a family history of geophysicists and rock enthusiasts, I’ve never found the subject of rocks particularly fascinating. However, an exploration of Earth Science has lead me to the discovery that rocks are actually hidden gems (often literally), and that there’s more to the topic than one would think.

Amethyst is purple quartz; the color is caused by iron (Fe4+) impurities. Azurite is a copper mineral. Calcite is a very common and widespread mineral and has highly variable forms and colors. Lodestone is a natural magnet. Mica is a sheet silicate. Rose quartz is translucent and a variety of the silica mineral quartz, found in pegmatite. Talc almost always found in foliated masses in metamorphic rocks with many carbonate minerals. Pyrite is a very common mineral. The brassy-yellow metallic color of pyrite has lead people to mistaking it for Gold, so its common nickname is

12. Describe the cleavage of the mineral shown in Figure 1.14A (p. 8 lab book).

The colour red indicates that they are fertile and menstrual. However, red is also the colour of blood, death and violence, which

Mineral |Crystal shape |Color |Density |Hardness |Streak |Fizzes in acid? | |Galena (lead ore) |Cubic/ irregular |Gray |7.5 g/mL |3 |Dark gray |No | |Gold |Irregular |Golden yellow |19.3 g/mL |3 |Yellow |No | |Graphite (pencil lead) |Irregular |Dark gray |2.2 g/mL |2 |Gray |No | |Hematite (iron ore) |Irregular |Red-brown to black |5.3

The main use for this mineral is for jewelry because of its shiny blue and violet appearance. “Although Benitoite is a valuable and exquisite gemstone, its hardness as a gemstone is relatively

The Crystals were made While the cave still had the water inside of it some of the water was saturated with calcite a tough shiny mineral. The calcite was re-located underwater in the cave in the form of spar. Spar is a type of crystal found commonly in the cave. The cave is abundant of stalagmites and stalactites every twist or turn. One mineral gypsum can create beautiful flower, spider, and needle formations. Calcite can also create criss-crossing boxwork formations.

Sedimentary rocks are classified by the source of their sediments, and are produced by one or more processes that follow:

As per J. Willard Hershey in "The Book of Diamonds," precious stones were initially found in Arkansas in 1906. The state is one of the most elevated designer of the stones in the United States; somewhere around 1972 and 2005, 25,369 jewels were mined in the state, as per the official state website.Often called "Arkansas jewels," quartz gems are minerals found in Arkansas. Quartz precious stone was announced the state mineral in 1967.

Gold is an example of a(n) _________ , quartz is a(n) _________ , and pyrite is a(n) _________ .

necklace has pink red rubies on the right side and white diamonds on the left. In Golden

     Metamorphic rocks are pre-existing rocks that are changed by heat and pressure. The pre-existing rock is called the parent rock, or protolith. Metamorphism occurs in these rocks when the minerals become instable. There are two types of metamorphism, contact and regional. Contact is high temperature, low pressure. It is basically a massive rock that is baked. Regional is high pressure and low temperature. Strong fabric, or layering, develops from

Color. Clarity. Cut. Carat Weight: These four words are what jewelers in the industry use to determine the monetary value of a diamond. However in 1947 De Beers found a way to not only boost their sales but also make a psychological necessity out of this sparkly stone, and it all began with four vastly different words, “A Diamond Is Forever” (Frances Garety), and accompanied by phrases such as “Isn’t two months’ salary a small price to pay for something that lasts forever (N.W. Ayers)?