Ruby: In mineralogy, only corundum with red hue is considered as ruby, and its hardness is 9, second only to diamond. Moreover, there is a saying that "ten treasures and nine cracks" are adopted. It is very precious to mine rubies with good quality under harsh climatic and geographical conditions.
Reasons for appreciation: long history, high acceptance, large market demand, few good quality, new favorite of auction.
2. Sapphire: Sapphire is also one of the top five gems in the world. All corundum except red in mineralogy is called colored sapphire, so its color is not unique.
Reasons for appreciation: diverse colors, timeless classics, market demand, new favorite of auction.
3. Emerald: This is often seen in TV dramas. It is called the world's four famous gems together with diamonds, rubies and sapphires.
Reasons for appreciation: noble symbol, eternal classic, scarce output and large market demand.
There is another hint.
transparent
Stone and sand
no
Lai Yu-ou
Bo (colorful and classic, charming and beautiful), (little output), golden green jade.
Wait a minute.
These are what I learned in Baojiehui Community, the first high-end female jewelry community initiated by Jie Bao, and a group of friends who are interested in jewelry and precious stones. If you have a sense of quality of life and the same interest in jewelry, you can also join the exchange.