International Gold 750 Mark
The international gold 750 mark is a hallmark applied to gold items that indicates a purity of 75% gold. It is commonly used in jewelry making and is also known as 18-karat gold.
Composition
Gold 750 is an alloy that contains 75% pure gold and 25% other metals, typically copper or silver. The addition of other metals enhances the durability and workability of the gold, making it suitable for various jewelry applications.
Properties
* Hardness: Gold 750 is harder than pure gold, which makes it less prone to scratches and damage.
* Strength: It has a higher tensile strength than pure gold, providing increased durability in jewelry settings.
* Tarnish resistance: The addition of copper or silver helps to prevent tarnishing, ensuring a lasting shine and color.
* Hypoallergenic: Gold 750 is typically hypoallergenic, making it suitable for people with sensitive skin.
Uses
Gold 750 is widely used in jewelry making, including:
* Engagement rings and wedding bands
* Pendants and necklaces
* Earrings and bracelets
* Brooches and other accessories
It is also used in watchmaking, dental applications, and as an investment asset.
Identification
Gold 750 is typically marked with the international gold hallmark, which consists of a three-digit number inside a rectangular or oval shape. The number “750” indicates the purity of the gold alloy.
Value
The value of gold 750 fluctuates with the spot price of gold. However, it is generally considered a valuable and desirable metal in the jewelry market.
Care and Maintenance
Gold 750 is a relatively durable metal, but it requires proper care to maintain its luster and condition. Here are some tips:
* Regular cleaning: Clean gold 750 jewelry using a mild soap solution and a soft brush.
* Avoid harsh chemicals: Do not expose gold 750 to harsh chemicals, such as chlorine or bleach.
* Store properly: Store gold 750 jewelry in a dry and protected place to prevent scratches and tarnishing.
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