How to identify black onyx?

Transparency: True agate transparency is not as good as synthetic, slightly chaotic, and some can see natural water lines or "clouds", while synthetic agate has good transparency and is as transparent as a glass ball.

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First, choose the color according to your favorite. Red agate jewelry is the most expensive. If you choose agate necklace, you should pay attention to the color of each bead. There is no mottle, the size of the beads should be appropriate, and the finish should be good. Then, lift the necklace to see if it is vertical, and whether each bead is hanging on a line. If the necklace is bent, it means that some of the beads are biased and the processing technique is rough.

Commonly used imitations are black stone, black stone scorpion and so on. The high grade black onyx is black and pure; the imitation black stone, black stone enamel is also a natural product, but its hardness is low and the gloss is slightly worse than black onyx.

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