Jade is more than just a beautiful stone—it’s a symbol of culture, history, and craftsmanship. When purchasing jade, you often hear terms like "jade," "purity," "luster," and "rubber." These are all ways to describe the quality of the jade. While many factors influence the value of jade, two key elements stand out: “Land†(also called “Groundâ€) and “Water.†Understanding these concepts can help you better appreciate and evaluate jade.
The term “Land†refers to the base or background of the jade, excluding the green color. It represents the overall texture and appearance of the stone. The “Land†can be transparent, opaque, or anything in between. It's closely related to “Water,†which refers to the transparency of the jade.
In addition to having rich green color and uniform tone, a clean “Land†is also highly valued. Here are some common types of “Landâ€:
- **Glass Land**: As clear as glass, smooth and pure, this is considered the best type of land.
- **Clear Water Land**: Slightly less transparent than Glass Land, but still excellent.
- **Egg White Land**: Resembles the texture of egg white, slightly cloudy, but still a high-quality option.
- **Shrimp Meat Land**: Has a pinkish or grayish tone, considered a mid-to-high quality land.
- **Lotus Root Powder Land**: Features a reddish hue, also a mid-to-high grade.
- **Porcelain White Land**, **Incense Ash Land**, **Shantou Land**, **Lake Green Land**—these are all opaque and fall into the lower category of land.
Now, let's talk about “Water.†This refers to the clarity and transparency of the jade. High transparency is called “water foot,†medium transparency is “water difference,†and opacity is “wood.â€
Words used to describe water include “pass,†“put,†“transparent,†“ice,†and “ying.†Among these, “ying†is the highest grade, while “no pass†is the lowest. “Ying†means the jade is extremely clear, while “wood†means it’s completely opaque.
When describing water, you might hear terms like “horse sugar water,†“glass water,†or “spring water.†Horse sugar water is similar to “ying,†glass water resembles “ice,†and spring water is akin to “transparent.â€
Water has a strong relationship with color. For example, a piece of emerald green jade may appear very vibrant under light, but if it lacks water, it might not show its true color. A jade with good water can display different shades depending on the lighting.
Under natural sunlight, the interplay between water and color can create various visual effects:
- **Slightly blue**: Known as “slightly yellowish,†this is considered top-grade.
- **Clearly bluish**: If green is still visible, it’s a mid-range product.
- **Deep blue**: The green is not visible to the naked eye, only under light. This is known as “see green green†and is considered lower-end.
- **Blue under light**: Appears blue under blue or black lights, commonly called “oil green,†which is a mid-range product.
Understanding these terms helps in evaluating the quality and value of jade. Whether you're a collector or a buyer, knowing the difference between “land†and “water†can make all the difference in choosing the right piece.
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