Once it is determined that a wheelchair chest harness can be beneficial, consider the following points on safety first: Use the chest harness in conjunction with a lap belt or seat belt that is firmly fastened at all times.
Drusy (or druzy) is a geological term applied to quartz that forms a layer of closely spaced, small crystals that line a surface or cavity of another kind of rock.ave. GreenSeason/iStock/Getty Images. Drusy (or druzy) is a geological term applied to quartz that forms a layer of closely spaced, small crystals that line a surface or cavity of another kind of rock. Drusy quartz, silicon dioxide, is most commonly clear or whitish, and can resemble glittering sugar or snow crystals.
About Turtleback. Druzy agate consists of a sparkling layer of very tiny quartz crystals coating the surface of agate. In order to survive the trauma of the mining process undamaged, these delicate crystal surfaces must originally have been protected by nature inside nodules or within cavities in the agate seam.