Creatinine is a normal waste product produced by muscle metabolism. When your kidneys are functioning normally, they filter creatinine and other waste products out of your blood and send them out of the body through urine. A creatinine urine test measures the amount of creatinine in your urine and can help your doctor evaluate how well your kidneys filter waste. This is useful in diagnosing or ruling out kidney diseases and some other conditions.
These terms are based on old traditions from the west. These days, all gemstones are considered precious since they are all rare and there is a limited supply of them. The traditional list of gemstones that are considered precious stones are: Diamond.
Beside black, red (rubellites) and yellow, tourmalines also occur as green stones. The green gemstones come the species of tourmaline called elbaite, which is further divided into two varieties: verdelite and indicolite, the latter also available in blue.hough popularly known for their white variety, pearls are also available as black, yellow and green stones. Light green pearls are produced by Japanâs Akoya oysters, while the dark green gemstones come from the black pearl oyster, whose pearls are not necessarily black, but may also be shades of green and blue.