Sodium feldspar jade, also known as "water foam", is often colorless, white, grayish white, and has a blue-green "flower", with good transparency, and is very similar to ice jade. In the jewelry market of Kunming, Ruili, Tengchong and other large cities in Yunnan, there has been a kind of “ice type†jade with good water head and transparent or translucent. The color is generally white or grayish white, with less white spots and pigment spots, uneven distribution, dark blue tones, and a shade of blue tones called "underwater blue flowers", which looks like a good head. Ice jade, especially the variety of floating orchids, resembles the blue-flowered egg white, even ice, glass jade, so it is often used by unscrupulous merchants in the market to pretend to be high-quality jade and sell at high prices.
How to distinguish between jade a cargo and water foam:
Gloss - Emerald is glass luster, rigid enough to look dazzling and bright. The water foam is relatively weak, weak in rigidity, weak and weak, and lacks strength.
Color - jade can be seen in green, color root, obvious color transition, while water foam is not green, no color transition, and there are more white stone brain or stone flower.
Specific gravity - jade is 3.33, while water foam is 2.6-2.8, jade is much heavier than water. Directly rubbing by hand, the jade is obviously heavy and more thug; while the water foam is light and swaying, it looks thin and has no sinking feeling.
Hardness - high jade, polished can be polished, no matter how polished the water foam is not very bright, related to hardness! Water foam is easy to break, and some water foam sticks to the double-sided tape to peel off the minerals.
Light-transparent to see the grain - under the condition of light transmission, observe the internal structure of the two with a ten-fold magnifying glass. It will be found that the flesh of the ice-flowered jade is fine, and the crystal particles of the micro-column or fiber are interwoven, and the water-foam The crystals are in the form of particles, and the crystal grains thereof are not arranged in an interlaced form.
Listening to the sound - the hardness and density of the jade are much higher than the water foam. When you tap both, the jade knocking sound is crisp, sweet, hard, crisp, and penetrating. The percussion sound of the water foam is dull, even weak, and it feels pale and thin, and the penetration is relatively weak.
Internal characteristics - white cotton can be seen inside the jade, which is caused by the combination of the crystal particles that make up the jade, the fineness between the crystals is not good enough, and the small white bubbles inside the water foam are arranged in parallel with the small bubble strings. The naked eye looks like the crystal texture formed when the crystal is crystallized. It is found that it is a small bubble-shaped void. In general, the void is filled with impurities to form fine floating flowers. The shape is filled in the gap due to the small flower. This phenomenon has not been seen in the jade.
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