In ancient times, agate was a rare thing with high value, and people used "pearl agate" to represent treasures. Now agate ornaments are very common because of the discovery of many raw materials and the improvement of polishing technology, but they are still senior jade talents.

Let's talk about coloured glaze first. The main component of natural glass is lead-barium glass, that is, silicon dioxide. Now the products on the market are all artificial, and the price can refer to artificial crystal. Strictly speaking, it is not a gem, let alone novel. The price of small pieces is only tens of dollars. As for Swarovski, that's the brand price.

Their price or value order. Seven treasures: 1 diamond, 2 rubies, 3 sapphires, 4 emeralds, 5 emeralds, 6 emeralds, 7 emeralds! Crystal belongs to low-grade jewelry! Three elements of jewelry: beauty, rarity and durability! This is what they have in common! Among them, diamond also has the highest hardness, strong refraction and high dispersion.

Crystal, jadeite, hetian jade, diamond and agate can be divided into medium, high and low grades. You must have heard the story of horse racing in Tian Ji. High-grade crystals can be sold at the price of diamonds, and there are tens of thousands of exquisitely carved agates.