Corundum Group Inc. increased its holdings in Microchip Technology by 3.4% in the third quarter. Corundum Group Inc. now owns ...

Ruby and sapphire are varieties of the mineral corundum. - Courtesy Hamilton Jewelers Ruby is one variety of the corundum mineral species, which also includes sapphire. Ruby is highly regarded and can ...

Microchip Technology Incorporated (NASDAQ:MCHP – Get Free Report) has been given a consensus rating of “Moderate Buy” by the ...

But the Mohs scale is deceptive. The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it’s many times harder than gems in the corundum family.

Enhancements and treatments are in addition to worth focusing on on the final analysis, and is really rare to locate treasure ...