I have always wondered how the amethyst cave was formed, especially the outer wall. Why is it hollow?

Amethyst Cave is a common feng shui ornament, and we can often see them at home, companies, hotels and other places. There are also many people who wonder how this amethyst cave was formed. Where were they born? Today, let's follow the footsteps of Yicheng to have a look.

The most important amethyst deposits in the world are distributed in the igneous rock-basalt in Uruguay and Brazil respectively. This igneous rock is widely distributed in Latin America, with an area of about 1,2,km2 and a predicted volume of about 8,km3. Such a huge number, some people will say, is there amethyst all over there? In fact, through in-situ observation, amethyst is limited to a specific area and a specific basalt lava flow.

Amethyst Cave is formed by the slow infiltration of groundwater containing silicon dioxide from the edge of Agate Cave, through long-term condensation and crystallization. The most primitive type of amethyst cave is a ball-shaped raw ore, which has become a common amethyst cave in the market after being cut in two. Generally, the amethyst caves we see have three layers, the innermost layer is amethyst grains, the middle layer is agate, and the outermost layer is a cement protective layer added by workers. There are also good crystal holes that are polished outside. This kind of polished crystal hole usually requires the agate wall outside to be very thick, so the polished crystal holes that are usually seen are few and expensive.

when high-temperature silicon-containing hydrothermal solution is poured into the crystal cave, if the crystal cave itself is relatively cold and the temperature is quite different from that of the hydrothermal solution, the supersaturation of the mineral liquid at the edge of the crystal cave is very large at first, and it is easy to form many tiny "crystal nuclei" in a short time, and it can grow stably and continuously. As you can imagine, so many small crystal nuclei grow up along the cave wall at the same time, and they will soon touch each other and cannot continue to grow up. Therefore, the earliest agate-aphanitic Shi Ying aggregate is often formed at the edge of the crystal cave.

when many small amethyst crystals are densely grown together, amethyst flowers will be formed, which, like amethyst caves, have the function of blocking and avoiding evil spirits in geomantic omen. The placement of amethyst caves should avoid direct sunlight. Excessive exposure to sunlight will lead to amethyst fading and magnetic field fading.

the growth of amethyst caves is not easy. Every amethyst cave placed beside you has gone through thousands of hardships before coming to your side!

the text and pictures are from the dancers on the designer spar?