The reason why lapis lazuli will be white, mainly the internal structure of the calcite or pyrite content is too much, so it will gradually form white spots, but also may be the later to let it often contact with sweat or with chemical substances, which is easy to form a certain corrosive effect, but also greatly affect the original value of lapis lazuli.

Lapis lazuli is a rare and precious stones, color uniformity and translucency, but some friends do not know why lapis lazuli will be white, if it is naturally occurring, mainly inside the lapis lazuli calcite or pyrite content is too much, over time will gradually form large white spots, its value will be reduced.

It may also be in the later wearing process, often with human sweat or with strong alkaline chemical contact, so the formation of a certain corrosion, so that the internal structure has changed, the particles inside the oxidation reaction will also occur, which is prone to the phenomenon of whitening.

So when wearing lapis lazuli, it is best not to let it come into contact with any items with chemicals, but also to keep the surface of the lapis lazuli clean, when there is dirt on it should be cleaned up in a timely manner, but should not be directly soaked in water to clean, mainly with a damp cloth to wipe it clean, so as not to affect the original color.