The basic concept of semi precious stones

In gemology, gemstones are generally divided into two categories: precious gemstones and semi precious stones. There are four main types of precious gemstones, namely diamonds, rubies, sapphires, and emeralds, while the remaining gemstones, such as crystals, agates, and chalcedony, belong to semi precious stones. There are many varieties of semi precious stones, each with different characteristics, identification methods, and values.

At present, with the popularity of crystal jewelry, it has driven the sales of other semi precious stone handicrafts, and other semi precious stones are classified within the scope of generalized crystals in the industry.