The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered ...

One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including ...

Corundum Trust Company INC trimmed its stake in JPMorgan Chase & Co. (NYSE:JPM) by 2.2% during the fourth quarter, according ...

A relatively new production of red corundum, reportedly from Bangkok, has been offered for sale in recent years. Although the producers claimed that these stones were red diffusion-treated corundum (i ...

I cor = integrated intensity of the corundum peak used for the RIR; I phase = integrated intensity of the pure phase peak used for the RIR. An alternate method to obtain a standard pattern if a pure ...

Pleochroic Differences in Natural and Verneuil Synthetic Corundum. Differences in the pleochroism of natural and Verneuil synthetic corundum often occur because of differences in their orientation.

The team believes that the structure was in use until the 8th century BCE, the middle of the period when the Kings of Judah ruled. A scarab seal from the 8th century BCE uncovered during the ...

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One significant area of research involves the use of ultrasound-assisted leaching to improve gallium recovery from corundum flue ... of optimizing the chemical structure of adsorbents to enhance ...