Where is the main origin of rubies?

Where is the main origin of rubies?

Myanmar

Burmese rubies have two main producing areas, one is the Mugu Valley in Myanmar; the other is Myanmar Meng Su.

Mumbai, Myanmar is the world's finest place for the production of rubies. It is famous for its pigeon blood red, so that “Burma Ruby” has become synonymous with commercial high-quality rubies. The Burmese ruby ​​ruby ​​has a bright rose-red color – the highest grade of red is called “pigeon red”, which is pure red and has a high saturation. The fluorescence effect in daylight is bright red in each facet. It is often rich in tiny rutile needle fog, forming a starlight. The color distribution is not uniform.

Meng Su is a new ruby ​​found in the 1990s, about 200 kilometers southeast of Mogok. Monsin ruby ​​is generally purple to brownish red, and the center of the ruby ​​crystal is often dark blue-purple. After heat treatment, the dark blue-violet stain is somewhat eliminated, and it is dark red to red, sometimes forming white floc. Lead to a decline in transparency. In addition, Meng Su Ruby also has a growth belt parallel to the bottom surface.

Thailand

Thailand is also an important producer and trading center for rubies, and it is reported that nearly 70% of the world's high quality rubies are produced in Thailand. The ruby ​​origin is located in Chonburi, southeast of Thailand. Thai ruby ​​has a high Fe content, a darker color, a lower transparency, and a dark red-brown red color. There is no fluorescence effect in daylight, but the facets in direct light are brighter, and the other facets are black. The color is more uniform. There is no rutile inclusion, so there is no star ruby ​​variety.

Sri Lanka

Sri Lankan rubies are known for their high transparency and soft color. Moreover, the particles are larger, and their color changes greatly, from light red to red, pink, brownish red or maroon to cherry red. The high-end products are bright red with a slight pink and yellow tone, often called cherry red or water red. In addition, the ribbon is developed, and the rutile needle is fine, long and evenly distributed.

Tanzania

The common colors of Tanzanian rubies are purple-red and orange-red, while pink and red are less, which is related to the higher Fe, Ti and relatively low Cr of rubies. Most of the ruby ​​cracks have not healed, filled with foreign particles and reduced the transparency of the ruby.

Vietnam

In the 1980s, Vietnam discovered several new ruby ​​producing areas, such as the ruby ​​deposit near Lu'an City in northern Vietnam, the ruby ​​deposit in Caizhou Village in Caizhong, Central Jingjing, and the ruby ​​deposit in the southern basalt area. Among them, Lu'an ruby ​​has the largest output and the best quality, followed by the ruby ​​of Caizhou. The rubies of the two places are collected from the residual slope. Violet ruby ​​color from pink to red, with a purple hue, rare pigeon blood red, with a streamlined color banding phenomenon.

China

Chinese rubies are mainly found in Yunnan, Anhui, Qinghai and other places, of which Yunnan ruby ​​is slightly better. Yunnan ruby ​​is produced in the phlogopite marble of the Ailaoshan metamorphic rock distribution area in western Yunnan, but the mining value is secondary sand ore. The ruby ​​grain is 1-10mm, the color is rose red and red. And even. However, the development of cracking, the inclusion of impurities and impurities, the vast majority can only be used as a curved surface gemstone, the original stone with faceted gem quality is rare.