Ruby Gemstone | Ruby Stone - GIA
Rubies can command the highest per-carat price of any colored stone. This makes ruby one of the most important gems in the colored stone market. In its purest form, the mineral corundum is colorless. Trace elements that become part of the mineral’s …
Ruby History and Lore - GIA
Ruby retained its importance with the birth of the western world and became one of the most sought-after gems of European royalty and the upper classes. Many medieval Europeans wore rubies to guarantee health, wealth, wisdom, and success in love.
Ruby Gemstone | Ruby Stone - GIA
The finest ruby has a pure, vibrant red to slightly purplish red color. As the color becomes too orangy or more purplish, the ruby moves down in quality. The highest-quality rubies have vivid color saturation. The color must be neither too dark nor too light to be considered finest quality.
Ruby Quality Factors | The Color Range of Ruby - GIA
Ruby can command the highest prices of any colored gemstone. The per-carat prices of fine-quality rubies have been rising consistently, many times breaking auction records. Click here and learn about the factors that make ruby so desirable!
Ruby Description - GIA
Ruby is one variety of the corundum mineral species, which also includes sapphire. Ruby is highly regarded and can command high per-carat prices. It is arguably one of the most important gems in the colored stone market.
Geographic Origin Determination of Ruby | Gems & Gemology
2019年8月15日 · In the gemological laboratory, rubies are generally broken down into two groups based on their trace element chemistry: marble-hosted (low-iron) rubies and high-iron rubies. High-iron rubies are usually a straightforward identification based on their inclusions and trace element profiles.
July Birthstone | Learn About the Ruby Gemstone | GIA
Shopping for ruby, the July birthstone? Learn about its history, origins, care and cleaning, and where rubies can be found to help you pick the right one.
Ruby - Gemological Institute of America
Ruby is famous for the beauty of its red color. Red represents strong emotions like love and anger. The most famous rubies are found in marble, a metamorphic rock. These have rich red color and usually glow a bright red under sunlight. The glow makes the red color even stronger. Darker rubies are found in igneous rock.
A Decade of Ruby from Mozambique: A Review | Gems
2017年11月8日 · In less than a decade, Mozambique has become the world’s most productive source for gem-quality ruby. Since the discovery in 2009, GIA has followed these deposits from the front lines, collecting data in the field and in the laboratory.
Indian Ruby Mining | Gems & Gemology
In summary, good-quality transparent ruby comes from host rocks in Karur; tabular hexagonal crystals ranging from transparent to translucent are mined from corundum granulites in Madikeri; and opaque star-ruby is found in the mango and coconut orchard soils of Channapantna.