Identification of jade and calcium aluminum garnet jade
In the early 1990s, the translucent calcium-aluminum garnet jade, known as Qinghai Cui, was very similar to the appearance of jadeite, which caused great concern.
Calcium aluminum garnet jade is usually opaque and partially translucent. The polished surface is mostly characterized by grease luster; the color is unevenly distributed from light green to green, and spotted spots or clustered and irregular bands are often seen. Because the typical characteristics of the calcium-aluminum garnet jade pattern are obvious, the jadeite and the calcium-aluminum garnet jade can be identified by the naked eye or with a magnifying glass of 10 times.
And under the Charles filter, the green portion of the calcium aluminum garnet jade turns red or orange-red. Moreover, the green calcium garnet phenocryst with coarser internal particles will form green dot-like spots, which are easy to identify. In addition, the most important basis for the identification of jade and calcium aluminum garnet jade is that the density and refractive index of calcium aluminum garnet jade are greater than jade.
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