science

List of individual gemstones

List of individual gemstones 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 individual gemstones rather than just read about it. In short: A number of individual gemstones are famous in their own right, either because of their size and beauty or because of the people who owned or wore them. Aquamarines Dom Pedro, the world's largest cut and polished aquamarine.

Key takeaways

List of individual gemstones 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 individual gemstones to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of List of individual gemstones from memory before moving on to harder problems.

Reference excerpt

A number of individual gemstones are famous in their own right, either because of their size and beauty or because of the people who owned or wore them.

Aquamarines Dom Pedro, the world's largest cut and polished aquamarine. It is currently housed in the Janet Annenberg Hooker Hall of Geology of the National Museum of Natural History in Washington, D.C.

Diamonds See List of diamonds

Emeralds

Bahia Emerald Carolina Emperor, 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US Chalk Emerald Duke of Devonshire Emerald Emerald of Saint Louis, 51.60 carats cut; discovered in Austria, probably Habachtal, resides in the National Museum of Natural History, Paris Gachalá Emerald Mogul Mughal Emerald, 217.80 carats cut; mined in Colombia and cut in the Mughal Empire in Hijri year 1107 (1695–1696), resides in the Museum of Islamic Art, Doha, Qatar Patricia Emerald, 632 carats uncut, dihexagonal (12 sided); discovered in Colombia in 1920, resides in the American Museum of Natural History, New York, NY, US

Jade Jadeite Cabbage

Jasper Meat-Shaped Stone

Opals Andamooka Opal, presented to Queen Elizabeth II, also known as the Queen's Opal Flame Queen Opal Galaxy Opal Halley's Comet Opal, the world's largest uncut black opal Olympic Australis Opal, reported to be the largest and most valuable gem opal ever found

Pearls

Abernethy Pearl Arco Valley Pearl La Peregrina Pearl of Lao Tzu Pearl of Puerto, largest known pearl Servilia's pearl, most expensive pearl of all time

Rubies

DeLong Star Ruby Midnight Star Ruby Neelanjali Ruby Rajaratna Ruby Rosser Reeves Ruby

Sapphires

Black Star of Queensland Logan Sapphire Queen Marie of Romania Sapphire Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr Star of India Star of Pure Land Stuart Sapphire

Spinels Samarian Spinel, the world's largest spinel Menshikov Ruby, the world's second largest spinel set on top of the Great Imperial Crown of Russia Timur Ruby, believed to be a ruby until 1851, hence its name Black Prince's Ruby, the famous spinel mounted on the Imperial State Crown of the United Kingdom

Topazes American Golden Topaz, the largest cut yellow topaz, weighing nearly 23,000 carats (4.6 kg). Chalmers Topaz, a 5,899.5-carat (1.17990 kg) cut topaz.

Tsavorite Lion of Merelani, a square cushion cut tsavorite that weighs 116.76 carats and has 177 facets. It is on display at the Smithsonian Institution.

Images

See also List of gold nuggets by size List of gemstones by species List of single-source gemstones List of minerals

References

External links Gemdat.org – The Gemstone Database Gemsociety.org – Gemstone Toxicity Table

Illustrations

Worked examples

Example 1 — a first encounter with List of individual gemstones

Start with the simplest possible case. Write down what List of individual gemstones 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 individual gemstones 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 individual gemstones 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 individual gemstones

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

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of individual gemstones 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.
Explain List of individual gemstones out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is List of individual gemstones in simple terms?

A number of individual gemstones are famous in their own right, either because of their size and beauty or because of the people who owned or wore them. Aquamarines Dom Pedro, the world's largest cut and polished aquamarine.

Why does List of individual gemstones 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 individual gemstones?

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 individual gemstones.