Grapevine true and false identification
How much do you know about Grapevine? Grape stone is a kind of silicate mineral. Usually they appear in the hollow of igneous rock. The good quality grape stone can be used as a gem. This kind of gem is called the Cape of Good Hope emerald. Today, Xiaobian tells everyone, let's take a look at the identification of grape stones!
Grapevine true and false identification
Because the grape stone is rare, the general ignorant or deliberate businessman will sell the green garnet as a grape stone. However, as long as you pay attention to the problem of inclusions, you can easily distinguish between green garnet and grape stone. Green garnets are generally rich in strips and needle-like inclusions, mostly green tourmalines or black tourmalines. Since the grape stone is formed under the effect of relatively low temperature hot water, it is rarely symbiotic with the minerals generated at high temperatures, and the formation temperature of the tourmaline is relatively high, so it should not coexist with the grape stone. Therefore, by observing the condition of the inclusions, the difference between the grape stone and the green garnet can be distinguished.
As for weight, it is also a distinct difference. The specific gravity of the grape stone is 2.87, which is very close to the crystal. A 10MM bracelet is about 22-29-31 grams. The green banana (green garnet) with the same diameter is 3.4-3.6, and the weight should exceed 34 grams. 38 grams.
Grape stone value identification
The grape stone is cleaned in the interior, the color is pleasing to the eye, the particles are large and round and full and the value is the identification standard. The fine texture of the grape stone, the elegant light green, the transparency of the watery, the appearance of the top ice jade, and the price is economical.
High-quality grape stone will produce a kind of "fluorescence" similar to the glass type of jade, very beautiful, the color of the grape stone is dark green - green gray green - green green - yellow green yellow green - yellow colorless, etc., occasionally gray. However, in general, the green-tone grape stone must have a yellow or gray color, and the yellow-tone grape stone is usually brighter but not brighter with a gray tone. In general, the color is not pure enough. The good grape stones are usually aggregates, dark green.
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