1, observe the external characteristics.

Generally, the dark-haired crystal is imperfect and turbid, which affects the appearance. But the best black hair crystal is clear, without turbidity, fog and ice crack at all. The gift is generous and decent, and it is more attractive to wear it yourself.

2, observe the internal characteristics

The synthetic crystal is characterized by cleanliness. There are inclusions and sponges in rock crystals, and the synthetic crystals are crystal clear. Some synthetic crystals have bubbles or some solid impurities. Observe whether there are inclusions and ice cracks.

Extended data:

Hairy minerals with different arrangements and combinations are distributed in the crystal, which looks like hair in the crystal, so it is called hair crystal. Hair crystals containing different minerals will form hair crystals of different colors.

For example, hair crystals containing rutile will form titanium (blonde) crystals containing black tourmaline, red hair crystals, silver (white) hair crystals, yellow hair crystals and black hair crystals, while most of those containing actinolite will form green hair crystals.

Most natural hair crystals are straight and filamentous, some are small and curved, often in bundles, radial or irregular orientation. Hair crystals with thin, straight hair and parallel orientation can appear cat's eye effect after processing and become fine hair crystals.

Hair crystals have three colors: red, green and black, and those crystals with dense and gorgeous needle-like and hairy inclusions are the best unprocessed ornamental gems, which belong to treasures. Foreign collectors have given them the reputation of "Golden Star Hair Stone".

Baidu encyclopedia-hair crystal

Baidu encyclopedia-black hair crystal