Characteristics of black agate

Agate is mainly composed of Sio2 _ 2 (silicon dioxide), which is gray when it is pure, red, black, blue and green when it contains various pigment ions, and has a deep or shallow ring structure.

Agate is generally transparent to opaque, with refractive index of about 1.54, specific gravity of 2.60, hardness of 7, glass luster, and cracked shells.

Agate has been widely used since ancient times, and the ancients often used "pearl agate" to describe wealth; Many legends abroad have mentioned that agate can bring happiness and confidence to the wearer and bring dreams. Natural black agate, not artificially dyed.

Colors range from black to dark black.

The crystalline state is banded, speckled and dense.

Longevity stone can promote happiness and prosperity. Can bring good luck, arrival Helps relieve stress. Enhance courage and courage. Reduce anger, jealousy and depression. Black agate can eliminate fear and make people feel safe. It can ward off evil spirits and prevent the invasion of low spirits and negative energy, and it can also bounce all negative energy such as dark magic and evil spells back to the original giver. This is a treasure of family and professional protection. It can increase people's macro view of things, especially when creating the future, without losing proper limit's sense of purpose and standing still. Can reduce primitive sexual desire, not controlled by desire. Black agate has powerful projection energy, and its black function can not only absorb negative energy, but also reflect it back because of its smooth mirror surface, so it has a powerful effect as an enchantment.

Identification of black agate

Transparency: the transparency of real agate is not as good as that of synthetic agate, which is a bit messy. Some can see natural waterlines or "clouds", while synthetic agate has good transparency and is as transparent as a glass ball.

Weight: Real agate jewelry is heavier than synthetic agate jewelry.

Temperature: Real agate is warm in winter and cool in summer, while artificial agate changes with the outside temperature. It gets hot when it's hot and cool when it's cold. First of all, choose according to your favorite color. Red agate jewelry is the most expensive. If you choose an agate necklace, you should pay attention to the consistency of each bead color, no noise, the bead size should be appropriate and the smoothness should be good. Then, lift the necklace to see if it is vertical and if each bead is hung on a line. If the necklace is bent, it means that some beads are biased and the processing technology is rough.

Commonly used imitations are Blackstone, Blackstone spike and so on. High-grade black agate is black and bright, pure and has natural texture; Imitation Blackstone and Blackstone are opaque and belong to natural products, but their hardness is low and their luster is worse than that of black agate. The specific gravity of plastic is much worse than agate, which means it feels floating, unlike agate. The handle and specific gravity of glass are similar to those of agate. Scraping the surface of agate with a small steel knife will not scratch the real agate (the hardness of agate is 7, and the hardness of steel knife is 5.5), but the glass painted with black paint will scratch and expose the white background.