Rubies, diamonds, sapphires and emeralds are known as the world's four major gems, because diamonds are the most well-known among most people, and quotations have risen sharply in the past two years, making many people keen to invest in diamonds. But in fact, the price of ruby ​​has risen more than diamonds. Although the hardness of the ruby ​​is relatively high, it is brittle, and the large carat ruby ​​is not common, and the international eighty-nine percent ruby ​​has been burned, that is, the physical heat is used to obtain very good color and clarity. Although such a gem does not change its natural characteristics, it is not purely natural. As a result, the price per karat is nearly double that of a gemstone of the same grade without burning. Therefore, the ruby ​​should be collected as much as possible without burning. The weight is better than 2 carats. The brighter the color, the better. The more transparent the clarity, the better. The general industry believes that ruby ​​must be at least 3 carats before it has a certain investment value. In addition to color and weight, the origin is also very important for the price of ruby. The highest price on the market today is Burmese ruby. The scarcity of ore resources is the main reason for the increase in ruby ​​prices. With the global inflation caused by the flooding of liquidity, some buyers purchase a lot of rubies in order to achieve the purpose of asset preservation and value-added, and various factors continue to push up the price of rubies. The financial properties of Ruby are now more than the collection properties. Today only natural rubies have investment value, can not be processed manually, and the investment of ruby ​​should have the certificate of an international authority. Some merchants can improve the color of ruby ​​and increase the transparency when the ruby ​​is heated to a certain temperature, so pay attention to the collection. T&H INTERNATIONAL TRADING LIMITED , https://www.th-tradenet.com