International Gold Number Color
The International Gold Number (IGN) is a classification system used to measure the intensity and tone of gold colors. It was developed by the National Gold Association (NGA) and is widely recognized as the industry standard for quantifying gold color.
The IGN system consists of two numbers:
* The first number (0-5) indicates the “depth” or intensity of the gold color. 0 represents the lightest, while 5 represents the darkest.
* The second number (0-10) indicates the “tone” or hue of the gold color. 0 represents a neutral or yellow gold, while 10 represents a greenish gold.
The IGN system is used to ensure consistency and accuracy in the manufacturing and communication of gold colors. It allows manufacturers, designers, and consumers to specify and match gold colors precisely.
Interpretation of IGN Colors
The specific interpretation of IGN colors can vary slightly depending on the manufacturer and the type of gold alloy used. However, the following general guidelines apply:
* IGN 0-20: Very light yellow golds, often used in jewelry and dental applications.
* IGN 21-40: Medium yellow golds, commonly found in wedding bands and other jewelry.
* IGN 41-60: Rich, warm yellow golds, often used in investment coins and bullion.
* IGN 61-80: Greenish-yellow golds, known for their antique and vintage appearance.
* IGN 81-99: Greenish golds, with a distinct greenish hue that is often used in decorative applications.
* IGN 100: Pure green gold, rarely used in commercial applications due to its low hardness and durability.
Applications of IGN Colors
The IGN color system is used in various industries, including:
* Jewelry: To specify the color of gold alloys used in rings, necklaces, bracelets, and other jewelry pieces.
* Dental: To match the color of gold alloys used in dental crowns, bridges, and fillings.
* Numismatics: To classify the color of gold coins and bullion bars.
* Decorative: To create specific color effects in architecture, interior design, and decorative artwork.
By understanding and using the International Gold Number Color system, manufacturers, designers, and consumers can communicate and match gold colors with greater accuracy and consistency.
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