How do you choose jade, and what are the best methods for buying jade? What should you pay attention to when purchasing jade in your daily life? Here are some essential factors that can help you better understand and evaluate jade.
1. Color
Color is one of the most important aspects when evaluating jade. The ideal color should be "positive, strong, bright, and uniform." When choosing colorless jade, it's important to note that no jade is completely colorless. There are differences in tone, saturation, and evenness. A brighter color is generally preferred. For example, when selecting floating flowers or oily jade, you can also refer to similar principles used for colorless jade.
2. Water (Transparency)
"Water" refers to the transparency of jade. The higher the transparency, the more valuable the jade. Common terms like "glass type," "ice type," and "scorpion type" are not strictly defined, but they are often used to describe different levels of clarity. Two common ways to rate water are:
- Transparent, semi-transparent, translucent, slightly transparent, and opaque—equivalent to glass, ice, alfalfa, bean, and stone.
- Three-point water, two-point water, and one-point water—similar to glass, ice, and ice.
3. Structure (Species)
This refers to the internal texture of jadeite, including the size and arrangement of its crystals. It's different from terms like "glassy," "golden seed," or "oil green."
4. Blemishes (Impurities)
Jade may have various blemishes such as cotton (fine or large spots), mottling (yellow, brown, or black spots), and cracks. These can affect the value of the jade:
- Cotton: Small, barely visible spots have minimal impact on value (about 5-10%).
- Cracks: Deep, long, and visible cracks can significantly reduce value, sometimes by up to 90%.
5. Weight
The weight of jade is also an important factor. For example, a high-quality ice-type pendant measuring 43/28/7 mm weighs about 20 grams and may cost around $10,000. If the same quality jade is smaller—say 35/20/6 mm—it weighs only 10 grams and costs about $3,000 to $4,000. The price decreases significantly as the size reduces.
6. Craftsmanship
Craftsmanship includes the proportion, polishing, and design of the jade. Good craftsmanship means accurate shapes, smooth lines, and even polishing. Poor workmanship may result in uneven edges, rough surfaces, or incorrect proportions. While the first five factors (color, water, structure, blemishes, and weight) are usually sufficient for regular jade, collectors and investors often place greater emphasis on the quality of the carving and design.
When purchasing jade or jade jewelry, always buy from a reputable store or shopping mall. Ensure that the product comes with a certificate from a recognized quality inspection authority, such as the National Jewelry Quality Supervision and Inspection Center or local jewelry testing institutions.
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