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.
See contemporary silver and gold designer jewelry with gemstones. Jewelry with brown gem stones comes in a variety of different shades, including copper, amber, auburn, beige, brick, bronze, chestnut, chocolate, cocoa, coffee, mahogany, rust and tan.hown below are pictures of some common and uncommon brown stones including tiger's eye, carnelian, citrine, topaz, sapphire, agate and jasper. The links below provide more information about a specific gemstone, pictures of jewelry made with the stone, or its corresponding birthstone facts.