science

List of emeralds by size

List of emeralds 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 emeralds by size rather than just read about it. In short: This is a list of emeralds by size. Emeralds Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium.

Key takeaways

List of emeralds 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 emeralds 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 emeralds by size from memory before moving on to harder problems.

Reference excerpt

This is a list of emeralds by size.

Emeralds Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate. Emeralds in antiquity were mined in Egypt at locations on Mount Smaragdus since 1500 BCE, and India, and Austria since at least the 14th century CE. The Egyptian mines were exploited on an industrial scale by the Roman and Byzantine Empires, and later by Islamic conquerors. Mining ceased with the discovery of the Colombian deposits; only ruins remain. Colombia is historically an important producer of emeralds, constituting 50–95% of the world production, with the number depending on the year, source and grade. Emerald production in Colombia has increased drastically in the last decade, increasing by 78% from 2000 to 2010. The three main emerald mining areas in Colombia are Muzo, Coscuez and Chivor. Rare "trapiche" emeralds are found in Colombia, distinguished by ray-like spokes of dark impurities. Zambia is the world's second biggest producer, with the Kagem emerald mine being the world's largest responsible for 25–30% of the world's production of gem-quality stones. In 2019, the Kagem emerald mine produced 42.4 million carats of emeralds. The Zambian emerald sector is an important contributor of tax revenue to the Zambian government. Zambian emeralds were formed over 500 million years ago; they are geologically much older than emeralds from other origins. As a result, they differ in their formation, composition and key features. Zambian emeralds get their intense green colour from the presence of chromium, iron and beryllium, and they are often lacking in vanadium, resulting in a bluish-green, lively and often eye-clean emerald.

Notable emeralds

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

Bibliography Notes

References

Allen, Nick (September 24, 2010). "Judge to decide who owns £250 million Bahia emerald". The Daily Telegraph. Retrieved August 31, 2019. American Museum of Natural History (2019). "Patricia Emerald". American Museum of Natural History. Retrieved August 31, 2019. Boulliard, Jean-Claude (2016). 101 minéraux et pierres précieuses qu'il faut avoir vus dans sa vie (in French). PUBLISHER. ISBN 9782100742271. - Total pages: 240 Gast, Phil (September 1, 2010). "North Carolina emerald: Big, green and very rare". CNN. Archived from the original on September 25, 2013. Retrieved August 31, 2019. Hurlbut, Cornelius S.; Kammerling, Robert C. (1991). Gemology. Wiley. ISBN 9780471526674. - Total pages: 352 Smithsonian Institution (2019). "Gachala Emerald". Smithsonian Institution . Retrieved August 31, 2019. Stancill, Jane (March 17, 2012). "N.C. gems to shine at museum". The News & Observer Publishing Co. Archived from the original on March 27, 2012. Retrieved August 31, 2019. Weil, Elizabeth (March 2, 2017). "The Curse of the Bahia Emerald, a Giant Green Rock That Ruins Lives". Wired. Retrieved August 31, 2019.

Illustrations

Worked examples

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

Start with the simplest possible case. Write down what List of emeralds 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 emeralds 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 emeralds 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 emeralds by size

In research: List of emeralds 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 emeralds 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 emeralds by size is common in secondary-school and first-year university syllabi. It links to neighbouring topics Gemstone-related lists, Lists by size, so understanding it makes those chapters shorter.
In everyday life: Look for List of emeralds 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 emeralds by size in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of emeralds by size means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
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Frequently asked questions

What is List of emeralds by size in simple terms?

This is a list of emeralds by size. Emeralds Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium.

Why does List of emeralds 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 emeralds 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 emeralds by size.