2. Most of the high-quality jadeites in the jewelry market come from the Quaternary and Tertiary conglomerate layered jadeite deposits in the Ulu River valley in northern Myanmar. They are mainly distributed in Kachin State in northern Myanmar, with a length of about 240km from north to south and a width of 170km from east to west. 187 1 year, Lu Wu (also known as Wu Jia, Wulong and Lu Wu) basin in Myanmar was discovered, among which there are four most famous deposits, namely Dumao, Myanmar Mao, Panmao and Nannaimao. Primary jadeite is mainly composed of white jadeite with various green tones, brownish yellow and light purple. In addition to jadeite, there are diopside, amphibole, aegirine and albite, and green jadeite rarely reaches the gem level.
3. Briefly introduce the production of Myanmar rough stone: new factory, no skin, good water and good bottom, white fog. It mainly produces violets and Hong Fei.
4. Pagang is a famous historical pit, which was first mined. Pagan skin is thin, mainly gray and yellow-white, with fine crystals, good seeds, high transparency and sufficient color.
5, gray card shell noise, mainly gray green and gray black, different transparency, uneven distribution of water bottom, but where there is green, water is often better.
6. Ma Meng, also known as Wusha Black Wusha, is gray in the black, and the bottom of the water is generally poor, often with black silk or white fog, and the green is partial to the basket.
7. Wood chopping, also known as knife grinding, is mostly brown-gray and yellow-red. Generally, water and low water are better, but there are more white fog and yellow fog.
8. The plaster skin is thick and the skin color is grayish yellow or gray; The water and bottom are good, and there are few cracks. It is a green or all-green high-green variety with few impurities. Glass bottom is more common, but the output is less.
9. Seen from the wall, it is also called inferior leather shell, which is mainly yellow-gray with good bottom and few cracks, but with white fog. Its products are famous for their good blue flower water.
10, Longtang, also known as Longkeng, is mainly made of yellow sand skin or gray fish skin, and the skin shell is thick. Most of the water and the bottom are good, the green is very positive, and high-quality materials are often produced.
1 1. Massa is a new factory, with no skin or less skin, light green, good water quality and poor bottom. Mainly used as low-grade Burmese jade bracelet material or large decorative material.
12, Houjiang River, also called ridge bottom, is divided into old Houjiang River and new Houjiang River, both of which are produced in bed impact sand. Among them, Laohoujiang is produced at the bottom of the impact layer.