Real silver is identified by its sound, its lack of magnetic qualities and by its ability to conduct heat. For instance, when tapped together, two silver coins emit a high, clear tone. The bell-like ring continues for a ... More »

According to eBay, one way to find out if a sterling-silver tea set is made out of real silver is to pay attention to its coloring. Most silver is mixed with other alloys such as copper. Low-grade silver often has a slig... More »

Genuine Federal Bureau of Investigation badges are characterized by the following traits: color, symbols, eagle placement, accompanying identification and matching photo. Most badge forgeries lack color authenticity, eng... More »

Fracking is a controversial topic with many negative qualities, such as requiring large quantities of water in order to work, releasing potentially carcinogenic chemicals from the ground into the surrounding groundwate... More » Science Earth Science Geology

Clay most commonly forms due to erosion or weathering; both methods involve rocks coming into contact with something, such as air or water, to form the clay from existing minerals on the ground. It is common for clay to ... More »

High ductility, malleability, conductivity and a lustrous white appearance are some of the physical properties of silver. Pure silver has the highest electrical and thermal conductivity of all the metals. Because its nat... More »

Quartz is used in radios, radar, sound equipment and television. It's also used in the mechanism for watches. The mineral's versatility comes about because it has piezoelectric qualities. This means that quartz takes on ... More »