Commonly referred to gems of high traditional value, diamond, ruby, sapphire and emerald.
Diamond, emerald, ruby or sapphire, all of which are very valuable and rare. Precious stones are often referred to as "gemstones."
a mineral having great value protein any of a group of organic compounds composed of one or more chains of amino acids and forming an essential part of all living organisms (empty) radioactive the spontaneous degeneration of atomic nuclei, emitting penetrating particles radium a radioactive metallic element Robber Barons- a term for late 19th-century industrialists rock any natural material, hard or soft, consisting of one or more minerals room and pillar a modern mining technique where large mining "rooms" are supported and stabilized by pillars RNA ribonucleic acid secede to break away from semi-precious stone less valuable than a precious stone silver a grayish-white lustrous metallic element occurring naturally sluice to rinse ore smelter a refining furnace Star of Arkansas a large yellow diamond found in Crater of Diamonds, worn by Hillary Clinton at President Clinton's inaugural ball
A precious stone (also called a gemstone) is one that is valuable and rare.
