Japanese Character Shakudo Button Hole Stud in Mixed Metals

Shakudo button hole stud; modelled as a Japanese character,…
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shakudo button hole stud; modelled as a Japanese character, mounted in silver, copper, bronze and low carat gold, length 23 mm, total gross weight approximately 6 grams.; accompanied by a fitted box.

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  • Carat - A carat (abbreviated "ct") is a unit of measurement used to describe the weight of a diamond or other gemstone, and separately is a unit of measurement used to describe the weight of precious metals such as gold,.

    For gemstones, one carat is equal to 0.2 grams or 200 milligrams. The weight of a diamond is one of the Four Cs (along with cut, colour, and clarity) that are used to determine a diamond's value.

    It is important to note that a diamond's weight does not necessarily correspond to its size. A diamond's cut, which affects how well it reflects light, can make a diamond of a lower weight appear larger than a diamond of a higher weight. Additionally, the carat is not the only factor to determine the value of a diamond, other factors such as clarity, colour and cut are important too.

    In the gold industry, the purity of gold is measured in carats (abbreviated "ct"), with 24 karats being pure gold and lower carat numbers indicating a lower purity level. So, for example, 18 carat gold is 18/24 or 75% pure gold, and 12 carat gold is 12/24 or 50% pure gold.
  • Shakudo - Japanese shakudo is a traditional alloy that has been used in Japan for centuries. It is primarily composed of copper and gold, with the copper serving as the base metal and the gold adding a yellowish hue to the alloy. Shakudo is known for its beautiful dark blue-black or black colour, which is achieved through the addition of a small amount of a patina-inducing element like silver or arsenic.

    The word "shakudo" itself can be translated as "red copper" in Japanese, referring to the reddish-brown color of the pure copper base metal before it is patinated. The gold content in shakudo is usually around 4-10%, but this can vary depending on the specific purpose or desired appearance.

    Shakudo has been traditionally used in various forms of decorative arts and crafts in Japan. It is particularly associated with metalwork, including sword fittings (such as tsuba, menuki, and kashira), jewelry, and small ornamental objects. The alloy's dark color provides a striking contrast to other metals like silver or gold, making it ideal for intricate inlay work or as a background for other decorative elements.
  • Bronze - An alloy of copper and tin, traditionally in the proportions of about 9 parts of copper to 1 part of tin.

    The discovery of bronze in Western Asia in the 4th century enabled people to create metal objects which were superior to those previoulsy possible because of its strength and hardness, and it has been used throughout the world for weapons, coins, tools, statuary and other decorative items.

    It is very fluid in a molten state, and its hardness, strength when set, and non-corrosive properties makes it most suitable for casting sculpture.

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