earth science

Sewelô

Sewelô is a earth 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 Sewelô rather than just read about it. In short: The Sewelô diamond is the fourth-largest rough diamond ever found. The diamond was recovered in April 2019 by the Lucara Diamond Corp in its Karowe diamond mine in Botswana.

Key takeaways

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

Reference excerpt

The Sewelô diamond is the fourth-largest rough diamond ever found. The diamond was recovered in April 2019 by the Lucara Diamond Corp in its Karowe diamond mine in Botswana. The diamond is 1,758 carats and weighs 352 grams or 12.39 oz. At the time it was found, Sewelô was the largest diamond in Botswana's history, surpassing the 1,111 carats (222 g, 7.83 oz.) Lesedi La Rona extracted at the same mine on 16 November 2015. The Lesedi La Rona was the fourth-largest diamond ever found, and the third-largest of gem quality. The gem was named through a competition held by Lucara. Out of 22,000 submissions the name Sewelô was chosen, which translates 'rare find' in Setswana. In January 2020 it was announced that Louis Vuitton had purchased the diamond for an undisclosed sum. Louis Vuitton will work with HB Antwerp to polish the diamond and cut it into smaller stones. The stone is covered with a thin layer of opaque black carbon and its surface is pitted. It is the size of a tennis ball but weighs six times more. The HB Company has applied novel mapping methods using artificial intelligence in order to optimise the design and to maximize the chance of success in cutting the diamond. The diamond has been described as a "near-gem of variable quality, including domains of high-quality white gem", an industrial diamond with sections that could produce gem-quality stones. Further analysis was in progress as of April 2021.

See also Kimberlite Lesedi La Rona List of diamonds List of largest rough diamonds List of diamond mines List of mines in Botswana

References

External links Lucara Diamond website

Worked examples

Example 1 — a first encounter with Sewelô

Start with the simplest possible case. Write down what Sewelô claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth 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 Sewelô 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 Sewelô 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 Sewelô

In research: Sewelô appears in earth 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 Sewelô 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: Sewelô is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2019 in Botswana, Diamonds originating in Botswana, Individual diamonds, so understanding it makes those chapters shorter.
In everyday life: Look for Sewelô 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 Sewelô in 20 minutes

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

Frequently asked questions

What is Sewelô in simple terms?

The Sewelô diamond is the fourth-largest rough diamond ever found. The diamond was recovered in April 2019 by the Lucara Diamond Corp in its Karowe diamond mine in Botswana.

Why does Sewelô matter?

Because it connects several earth 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 Sewelô?

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 Sewelô.