science

List of sapphires by size

List of sapphires by size is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand List of sapphires by size rather than just read about it. In short: This is a list of sapphires by size. Sapphire Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al2O3) with trace amounts of elements, such as: iron, titanium, chromium, copper or magnesium.

Key takeaways

List of sapphires by size belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect List of sapphires by size to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of List of sapphires by size from memory before moving on to harder problems.

Reference excerpt

This is a list of sapphires by size.

Sapphire Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al2O3) with trace amounts of elements, such as: iron, titanium, chromium, copper or magnesium. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. The only color corundum stone that the term sapphire is not used for is red, which is called a ruby. Pink colored corundum may be either classified as ruby or sapphire depending on locale. Commonly, natural sapphires are cut and polished into gemstones and worn in jewelry. They also may be created synthetically in laboratories for industrial or decorative purposes in large crystal boules. Because of the remarkable hardness of sapphires – 9 on the Mohs scale (the third hardest mineral, after diamond at 10 and moissanite at 9.5) – sapphires are also used in some non-ornamental applications, such as infrared optical components, high-durability windows, wristwatch crystals and movement bearings, and very thin electronic wafers, which are used as the insulating substrates of special-purpose solid-state electronics such as integrated circuits and GaN-based blue LEDs. Sapphire is the birthstone for September and the gem of the 45th anniversary. A sapphire jubilee occurs after 65 years.

List of sapphires

See also List of emeralds by size List of gold nuggets by size List of individual gemstones

Bibliography Notes

References Abrams, Judith Z. (2012). The Other Talmud--the Yerushalmi: Unlocking the Secrets of the Talmud of Israel for Judaism Today. Jewish Lights Publishing. ISBN 9781580234634. - Total pages: 239 American Museum of Natural History (2019). "Star of India". American Museum of Natural History. Retrieved September 11, 2019. BBC News (February 6, 2017). "Queen's Sapphire Jubilee: Gun salutes mark 65 years on the throne". BBC News. Retrieved September 11, 2019. Christie's (November 19, 2003). "Lot 382: A Magnificent and Historic Sapphire Pendant, By Cartier". Christie's. Retrieved September 11, 2019. Farges, François; Panczer, Gérard; Benbalagh, Nassima; Riondet, Geoffray (Winter 2015). "The Grand Sapphire of Louis XIV and The Ruspoli Sapphire". Gems & Gemology. 51 (4). Gemological Institute of America. ISSN 0016-626X. Retrieved September 11, 2019. Gemological Institute of America (2019). "sapphire". Gemological Institute of America. Retrieved September 11, 2019. Howard, Bill (December 2, 2011). "The rush job from Hell". Southern Jewelry News. Retrieved September 11, 2019. Naso, Pat (February 5, 2003). "Feature: Legendary sapphire for sale". United Press International. Retrieved September 11, 2019. Sivaramakrishnan, P (January 4, 2016). "World's largest blue star sapphire 'found in Sri Lanka'". BBC News. Retrieved September 11, 2019. Smithsonian Institution (2019). "Bismarck Sapphire Necklace". Smithsonian Institution. Retrieved September 11, 2019. Smithsonian Institution (2019a). "Logan Sapphire". Smithsonian Institution. Retrieved September 11, 2019. Smithsonian Institution (2019b). "Star of Asia". Smithsonian Institution. Retrieved September 11, 2019. United Press International (April 29, 2007). "Sapphire sells for more than $3 million". United Press International. Retrieved September 11, 2019. Younghusband, George John; Davenport, Cyril (1919). The crown jewels of England. Funk. - Total pages: 84

Illustrations

Worked examples

Example 1 — a first encounter with List of sapphires by size

Start with the simplest possible case. Write down what List of sapphires by size claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to List of sapphires by size before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about List of sapphires by size ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of List of sapphires by size

In research: List of sapphires by size appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses List of sapphires by size in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: List of sapphires by size is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gemstone-related lists, Individual sapphires, Lists by size, so understanding it makes those chapters shorter.
In everyday life: Look for List of sapphires by size outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study List of sapphires by size in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of sapphires by size means in your own words.
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Frequently asked questions

What is List of sapphires by size in simple terms?

This is a list of sapphires by size. Sapphire Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al2O3) with trace amounts of elements, such as: iron, titanium, chromium, copper or magnesium.

Why does List of sapphires by size matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study List of sapphires by size?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on List of sapphires by size.