Jadeite is often referred to as the "King of Jade," admired for its unique beauty, vibrant colors, and deep cultural significance. It has captured the hearts of people around the world, and those who appreciate jade should have a basic understanding of its characteristics and how to identify genuine pieces.
First, let's explore the composition of jadeite. The primary mineral in jadeite is jadeite itself, with the chemical formula NaAlSi₂O₆. Its theoretical composition includes approximately 59.44% SiO₂, 25.22% Al₂O₃, and 15.34% Na₂O. In addition to jadeite, natural jadeite may contain between 1-52% other pyroxene minerals such as diopside or calcite. Jadeite forms as a dense aggregate of fine fibrous microcrystals, creating a structure that resembles a carpet. This gives it high toughness, making it resistant to impact and pressure, which contributes to its durability.
Second, the origin of jadeite is important to understand. Jadeite is one of the seven precious treasures and is found exclusively in Myanmar. The most famous region is the Wulong River basin in the northern part of the Mizhinao arch area, located about 100 kilometers from western Yunnan, China. Centuries ago, Chinese traders on the ancient Southern Silk Road discovered raw jade stones in northern Burma. After being polished and processed, these stones became highly valued and integrated into Eastern art. Today, Tengchong and Ruili are major centers for jade distribution. The name "jade" comes from a bird called "Jadefish," known for its beauty, which inspired the name for this precious stone.
Third, when purchasing jade jewelry, there are several key factors to consider. First, examine the texture or "species." High-quality jade has tightly packed, fine crystals that allow light to pass through easily, giving it a clear, watery appearance. Poor quality jade tends to be more opaque and cloudy. Second, look at the color—emerald green is ideal. Be cautious of overly bright or full green pieces, as they may be treated or fake. Third, check the "base" or background of the piece. A good jade should be clean, without impurities. Lastly, pay attention to craftsmanship. Well-carved pieces with balanced proportions and artistic detail hold greater value.
Fourth, proper maintenance is essential for preserving the beauty of jade jewelry. Although jadeite is tough, it can still be damaged if dropped or hit. Avoid exposing it to chemicals like acids or alkalis, and keep it clean by using a soft cloth and mild detergent. If waxed, avoid contact with solvents. Store jade in a dry place to prevent it from drying out.
Fifth, choosing the right size for a jade bracelet is crucial. To measure, slide the bracelet over your four fingers (excluding the thumb), and ensure it feels slightly tight. Measure the inner diameter, and adjust accordingly. Some prefer a looser fit, while others like it snug. Always try it on before purchasing.
Sixth, it's important to understand the differences between A, B, C, and D grade jade. A-grade jade is natural and untreated. B-grade involves acid washing and filling, which weakens the structure. C-grade is dyed, and D-grade refers to other materials imitating jade.
Lastly, the issue of B-grade jade remains controversial. Many experts warn that B-grade jade has been chemically altered and may not last long. Consumers should always ask for transparency and be cautious of misleading labels. Buying genuine jade requires knowledge, patience, and careful inspection.
Aluminum Precision Turned Parts
1. The hardness of the material is moderate, and the tool wear of the machining equipment and CNC machining center is small.
2. It can be precisely machined into various geometric shapes such as plane, cavity, shell, sphere, arc, and anisotropy.
3. It is not easy to stain and maintain. Aluminum precision parts, precision parts processing, CNC processing
4. It has good durability and is not easy to corrode. With special treatment process, the service life of parts is longer.
5. Aluminum is environmentally friendly and can be 100% recycled, with high recycling value.
The above five points are the material characteristics of aluminum products. Aluminum is a common material in CNC precision parts processing, with moderate hardness, durability and corrosion resistance. In addition, the cost of materials is appropriate. It is the preferred material for most parts manufacturers.
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