As a popular jade, the quality of foam jade is determined by many factors. This article will comprehensively explain the determinants of the quality of foam jade, including mineral composition, hardness and density, color, transparency, luster, craftsmanship and rarity.
1. Mineral composition.
Foam jade is mainly composed of albite and contains small amounts of minerals such as pyroxene, hornblende, and chlorite. Albite is a common rock-forming mineral that is widely distributed in the earth's crust and is grayish-white or pale yellow in color, with a vitreous luster and low hardness. The higher the albite content in foam jade, the better its quality.
2. Hardness and density.
Hardness is one of the important indicators to measure the quality of jade. The hardness of foam jade is low, generally in 6-65, slightly lower than jadeite. Density is also one of the factors to evaluate the quality of foam jade, the density of foam jade is generally 258-2.64 grams between cubic centimeters. Generally speaking, the higher the hardness and the denser the foam jade, the better the quality.
3. Color. There are many colors of foam jade, including white, gray, light green, dark green, etc. Among them, white and green are the most common. White foam jade is usually relatively pure and has a delicate texture; Green foam jade has more variations, some of which are deep and intense, while others have white or black markings. In general, the quality of brightly colored, pure and uniform foam jade is better.
4. Transparency.
Transparency is one of the important factors in evaluating the quality of jade. The transparency of foam jade is high, generally between translucent and transparent. The higher the transparency, the less impurities and cracks inside the jade, and the better the quality.
Fifth, luster. Luster is one of the important factors in evaluating the quality of jade. Foam jade has a vitreous luster or grease luster, and the surface is smooth and delicate. The higher the gloss, the stronger the reflective ability of the jade and the better the quality.
Sixth, the process. Craftsmanship is also one of the important factors in evaluating the quality of foam jade. The processing technology of foam jade includes cutting, grinding, polishing and other aspects. The exquisite foam jade products have smooth lines and beautiful shapes, and have high artistic value and collection value. Therefore, when purchasing foam jade, in addition to paying attention to the quality of the jade itself, we should also pay attention to its processing technology.
7. Rarity.
Rarity is one of the important factors to evaluate the quality of foam jade. The yield and distribution of different varieties of foam jade in nature vary, and some varieties of foam jade are very rare, so their value is higher. In addition, some special foam jade products, such as exquisitely carved and uniquely shaped ornaments or pendants, tend to be higher due to their uniqueness and artistic value.
In summary, the determinants of the quality of foam jade include mineral composition, hardness and density, color, transparency, luster, craftsmanship and rarity. When purchasing foam jade, consumers should consider these factors comprehensively to select high-quality and high-value foam jade products. At the same time, it is also necessary to pay attention to distinguishing real and fake foam jade, and avoid buying fake or defective products.