Quartzite jade and jade identification method?
In the process of identifying quartzite jade from jade, we need to rely on professional knowledge, careful observation and practical skill to distinguish between these two gemstones, which have many similarities. Below, let's explore this wonderful area in depth.
1. Appearance observation.
First of all, through the observation of the rough stone, we can preliminarily determine whether it is quartzite jade or jade. The surface of quartzite jade generally shows a vitreous luster, the color is relatively uniform, often colorless or white transparent, while jade mostly shows grease luster or waxy luster, the color is more layered, often there are emerald green, white, black, yellow and other colors.
2. Hardness testing.
Secondly, we can further identify it through hardness testing. The hardness of quartzite jade is relatively high, generally around 7, and it can be scraped with tools such as blades, and generally does not leave traces. The hardness of jade is low, generally between 5-6, and it is easy to leave marks after scratching with a blade.
3. Weight feeling.
Furthermore, we can identify by the feeling of weight. Due to the greater density of quartzite jade, it feels heavier to the touch, whereas jade has less density and feels relatively light.
4. Voice recognition.
In addition, we can also identify by voice recognition. Gently tapping quartzite jade will make a crisp sound, while jade will make a more dull sound.
5. Professional instrument testing.
Finally, we can use professional instruments for testing. For example, the internal structure of quartzite jade and jade can be observed using a microscope. Quartzite jade has a more uniform internal structure, while jade can see a fibrous or flake structure. The refractive index of quartzite jade and jade can be measured using a refractometer to further confirm their species.
6. Observation of gloss and transparency.
Luster and transparency are important characteristics of gemstones and are critical to distinguishing quartzite jade from jade. Quartzite jade usually exhibits a vitreous luster, high transparency, and strong light penetration. Jade, on the other hand, mostly shows grease luster or waxy luster, with relatively low transparency and weak light penetration.
7. Texture and color identification.
Texture and color are important elements in gemstone appreciation. Quartzite jade is usually more homogeneous in texture and more uniform in color. The texture of jade is rich and varied, with bright colors and layers. For example, the green color of jadeite has different shades.
First, the characteristics of uneven distribution.
8. Density and specific gravity measurement.
Density and specific gravity are important physical parameters to distinguish quartzite jade from jade. Due to the high density of quartzite jade, it feels heavier. Jade, on the other hand, has a smaller density and is relatively light to the touch. Precise measurements can be made with professional specific gravity liquids or balances.
9. Observation of fractures and cracks.
Fractures and cracks are also an important basis for identifying quartzite jade and jade. The fractures of quartzite jade are usually shell-like and relatively smooth. The fractures of jade, on the other hand, are mostly jagged or jagged. In addition, cracks are often present in jade, while quartzite jade is relatively rare.
Summary: The process of identifying quartzite jade from jade requires a comprehensive use of various methods and techniques, including appearance observation, hardness testing, weight perception, sound recognition, professional instrument testing, and observation and analysis of luster, transparency, texture, color, density, specific gravity, fracture and crack. It is only through continuous learning and Xi practice that we can gradually improve our ability to appreciate and identify these two beautiful gemstones. Search Topic Full Time Challenge December