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Kokichi Mikimoto

Kokichi Mikimoto 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 Kokichi Mikimoto rather than just read about it. In short: Kokichi Mikimoto (Japanese: 御木本 幸吉, Hepburn: Mikimoto Kōkichi; 25 January 1858 – 21 September 1954) was a Japanese entrepreneur who is credited with creating the first cultured pearl and subsequently starting the cultured pearl industry with the establishment of his luxury pearl company Mikimoto. He was inducted into the House of Peers by imperial decree and posthumously awarded the Grand Cordon of the Order of the…

Kokichi Mikimoto — main illustration
Kokichi Mikimoto — illustration

Key takeaways

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

Reference excerpt

Kokichi Mikimoto (Japanese: 御木本 幸吉, Hepburn: Mikimoto Kōkichi; 25 January 1858 – 21 September 1954) was a Japanese entrepreneur who is credited with creating the first cultured pearl and subsequently starting the cultured pearl industry with the establishment of his luxury pearl company Mikimoto. He was inducted into the House of Peers by imperial decree and posthumously awarded the Grand Cordon of the Order of the Sacred Treasure. On 18 April 1985, the Japan Patent Office selected him as one of Ten Japanese Great Inventors. The company was ranked as one of the world's most luxurious brands by Women's Wear Daily Magazine and Mikimoto was considered one of the best Japanese financial leaders of the 20th century by Nihon Keizai Shimbun. He is also known as the founder of Mikimoto Pharmaceuticals, a company specialising in beauty products containing pearl calcium. Mikimoto Pearl Island is named after him. In addition, the "Phoenix Mikimoto Crown" used by Miss Universe winners as well as the pageant crown used by Miss International is credited to his patented work.

Early life

Mikimoto was born 25 January 1858 in Toba, Shima Province (now Mie Prefecture). Mikimoto's father was an udon shop owner. Mikimoto was the eldest son. At age 11, Mikimoto's father fell ill. He left school at the age of 13 and sold vegetables to support his family. Seeing the pearl divers of Ise unloading their treasures at the shore in his childhood started his fascination with pearls. At the age of 20, Mikimoto noticed the many flaws of pearls as he judged a pearl exhibition in 1878. This began Mikimoto's search for the development of the perfect pearl.

Pioneering cultured pearls

Mikimoto began his search of an alternative method to produce pearls as the chairman of the Shima Marine Products Improvement Association. At this point the demand for pearls had severely outweighed the supply, prompting the consideration of an effort to protect the oysters.

In 1888, Mikimoto obtained a loan to start his first pearl oyster farm at the Shinmei inlet on Ago Bay in Mie prefecture with his wife and partner Ume. On 11 July 1893, after many failures and near bankruptcy, he was able to create the hemispherical cultured pearls. The pearls were made by seeding the oyster with a small amount of mother of pearl. Despite this major discovery there were initially difficulties in selling his cultured pearls due to public confusion. To encourage sales, Mikimoto opened a jewelry boutique in Ginza where he was able to have workers educate the consumer on the nature of the cultured pearls. He introduced these pearls at a marine products exposition in Norway in 1897 and began an export business. However, it took him another 12 years to create completely spherical pearls that were indistinguishable from the highest quality natural ones, and commercially viable harvests were not obtained until the 1920s. In 1927, Mikimoto met with inventor Thomas Edison, who was in awe of Mikimoto's cultured pearls as it was "supposed to be biologically impossible".

Mikimoto did not know that government biologist Tokichi Nishikawa and a carpenter, Tatsuhei Mise, had each spent time in Australia and learned the secret to spherical pearl production from expatriate British marine biologist William Saville-Kent – inserting a piece of oyster epithelial membrane (the lip of mantle tissue) with a nucleus of shell or metal into an oyster's body or mantle causes the tissue to form a pearl sack. The sack produces nacre, which coats the nucleus, thus creating a pearl. Mise received a 1907 patent for this grafting needle. When Nishikawa applied in the same year, he realized that Mise had already secured a patent. In a compromise, the pair agreed to cooperate, calling their discovery the "Mise-Nishikawa method". Mikimoto had received a patent in 1896 for producing hemispherical pearls, or mabes, and a 1908 patent for culturing in mantle tissue, but he could not use the Mise-Nishikawa method without invalidating his own patents. Mikimoto then altered his patent application to cover a technique to make round pearls in mantle tissue, which was granted in 1916. However, this method was not commercially viable. Mikimoto finally made arrangements to use Nishikawa's methods after 1916, and Mikimoto's business began to expand rapidly.

Industry success

The new technology enabled Japan's cultured pearl industry to quickly expand after 1916; by 1935 there were 350 pearl farms in Japan producing 10 million cultured pearls annually.

Mikimoto Pearl Company In 1899, the first Mikimoto pearl shop opened in the fashionable Ginza district of Tokyo selling natural seed pearls and half round pearls. The Mikimoto business expanded internationally, opening stores in London (1913). By 1935, the Japanese pearl industry was facing oversupply issues and plummeting prices for Japanese cultured pearls. Mikimoto promoted Japanese pearls in Europe and the US to counteract falling prices. He publicly burned tons of low-quality pearls as a publicity stunt to establish a reputation that the Mikimoto company only sold high-quality cultured pearls.

After World War II, Mikimoto opened stores in Paris, New York City, Chicago, Boston, Los Angeles, San Francisco, Shanghai, and Bombay, and was thus one of the first Japanese brands to attain an international presence and recognition. Mikimoto had to constantly fight allegations that his pearls were only "imitations" of real pearls, despite scientific reports to the contrary. Mikimoto took advantage of every opportunity to personally promote his pearls, and took part in the 1926 Philadelphia World Exposition in which he displayed a replica of the "Liberty Bell" covered with pearls. Mikimoto was the official jeweler of the Miss USA (2003–2008), Miss Universe (2002–2007 and 2017–2019) and Miss Teen USA (2002–2008) pageants, under the Miss Universe Organization. In 2010–11, the company's estimated total sales were €300 million. In June 2013, the company was chosen to design a five-piece parure consisting of a brooch, necklace, earrings, bracelet and the state diadem for Princess Kako of Akishino's 20th birthday anniversary, valued at ¥30 Million JPY (US$279,000). The illustrious tiara features both floral motif and national symbols of Japan.

… excerpt ends here. Continue reading the full article.

Illustrations

Kokichi Mikimoto illustration
Kokichi Mikimoto: The wife of Mikimoto, Ume and his children in winter of 1895.
The wife of Mikimoto, Ume and his children in winter of 1895.
Kokichi Mikimoto: Mikimoto pearl earrings c.1970
Mikimoto pearl earrings c.1970
Kokichi Mikimoto: Mikimoto inserts nucleus in a pearl shell
Mikimoto inserts nucleus in a pearl shell
Kokichi Mikimoto: Mikimoto building in Tokyo, Taishō period.
Mikimoto building in Tokyo, Taishō period.

Worked examples

Example 1 — a first encounter with Kokichi Mikimoto

Start with the simplest possible case. Write down what Kokichi Mikimoto 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 Kokichi Mikimoto 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 Kokichi Mikimoto 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 Kokichi Mikimoto

In research
Kokichi Mikimoto 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 Kokichi Mikimoto 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
Kokichi Mikimoto is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1858 births, 1954 deaths, Burials at Aoyama Cemetery, so understanding it makes those chapters shorter.
In everyday life
Look for Kokichi Mikimoto 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 Kokichi Mikimoto in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Kokichi Mikimoto means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Kokichi Mikimoto out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kokichi Mikimoto in simple terms?

Kokichi Mikimoto (Japanese: 御木本 幸吉, Hepburn: Mikimoto Kōkichi; 25 January 1858 – 21 September 1954) was a Japanese entrepreneur who is credited with creating the first cultured pearl and subsequently starting the cultured pearl industry with the establishment of his luxury pearl company Mikimoto. H…

Why does Kokichi Mikimoto 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 Kokichi Mikimoto?

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 Kokichi Mikimoto.

Tags

  • 1858 births
  • 1954 deaths
  • Burials at Aoyama Cemetery
  • Japanese brands
  • Japanese businesspeople
  • Japanese inventors
  • Japanese scientists
  • Luxury brands
  • Pearls
  • People from Mie Prefecture

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