2. Morally speaking, they are all very good, each has its own advantages, and liking is more important.
3. In terms of market value, there are many high-end varieties of agate, such as Nanhong, Huozihong and Shuicao Agate.
4. In terms of collection value, agate stone has more collection value.
But for ordinary products, agate is relatively cheaper and the optimization is more serious.
Tiger's eye stone, or tiger's eye stone, is a kind of jewel with cat's eye effect, mostly yellow-brown, with silky light lines inside. Tiger eye stone is one of the seasonal varieties. This kind of gem can use bluestone, cotton fiber and silicon instead of pseudocrystals. The blue mutant produced by the unfinished silicification process is called "eagle eye stone". It is generally black and yellow, like a tiger pattern, but also blue, yellow and black, which is called blue opal. The secret key array is purified, and opal is often called "noble gem".
It belongs to one of the five precious and high-grade gems in the world together with the variable stone. Opals are mainly produced in hydrothermal deposits and pegmatite veins. Tiger eye stone is a variety of wood stone. The timely fibers of tiger's eye stone are shorter than those of wood stone, with irregular directions and stripes arranged in any direction. The world's largest tiger's eye and wood-changed stone deposits are located in transvaal province. In addition, it is also produced in Brazil, China and Henan. The price also depends on the color. Generally, the top grade is the one with flawless surface and clear eyeliner in the middle.
Agate, also known as agate, Kate Ma and agate, is a kind of chalcedony mineral. It is usually a banded rock block mixed with opal and aphanitic. Its hardness is 7-7.5 degrees, its specific gravity is 2.65, and its color is quite layered. Translucent or opaque. The primitive form of tripartite crystal system. It is often dense and massive, forming various structures, such as breast, grape and tuberculosis. The common structure is concentric circles. Chalcedony has different colors, usually green, red, yellow, brown, white and so on. According to patterns and impurities, it can be divided into onyx, silk-wrapped agate, moss agate, castle agate and so on. Usually used as toys or decorations. Often used as an ornament or ornamental. Agate balls can often be seen in ancient funerary objects.