1. Distinguish by color

It can be divided into colored crystals and non-colored crystals. Purple, yellow, pink, green and blue are colored crystals, while black, milky white, brown and colorless are non-colored crystals.

2. Distinguish according to the inner packaging contained in the crystal

Can be divided into "shape" crystals and "composition" crystals. "Shape" crystals are also known as hair crystals, moss crystals, water tank crystals and landscape crystals. "Ingredient" crystal, as the name implies, is that the ore composition of the crystal's inner package is different, and may be mixed with tourmaline, mica, rutile and other ore components, represented by rabbit hair crystal and ghost crystal.

3. According to the special optical effect to distinguish

Under the influence of light refraction, reflection, interference, diffraction, etc., some crystals will cause cat's eye effect (cat's eye crystal), star effect (star crystal) and rainbow effect (rainbow crystal), typical representatives are star powder crystal and golden hair crystal.

4. Distinguish according to the way of formation

Crystals can be divided into natural crystals, synthetic crystals and smelted crystals. Natural crystals are crystals formed by the movement of the earth's crust. Simply put, they are a kind of minerals with limited output. Synthetic crystals and smelted crystals are both made artificially. The difference is that smelted crystals do not have the crystal characteristics of crystals themselves, so most smelted crystals will be made into daily household products, such as fruit bowls, crystal cups, etc.