A gemstone is generally defined as any mineral that is highly valued for its beauty durability and rarity and has been enhanced somehow. The field of gemology contains professionals like appraisers goldsmiths jewelers lapidaries and scientists.
Oldershaw in encyclopedia of geology 2005.
Gemstone definition geology. For example enhancements like cut and polish increase a mineral s beauty color clarity texture. Other sedimentary gemstone deposits. They are popular gifts in the u s.
A gemstone also called a gem fine gem jewel precious stone or semi precious stone is a piece of mineral crystal which in cut and polished form is used to make jewelry or other adornments. There is no universally agreed upon definition for the word gemstone the word usually triggers an image of attractive mineral materials that have been fashioned into gems to be worn for personal adornment. Gemology is the science of identifying gemstones.
In addition to alluvial and eluvial gemstone deposits gemstones may also form in veins or cavities within rocks or as crusts on their surfaces. A gemstone or gem is a piece of mineral crystal which in cut and polished form is used to make jewelry or other adornments. Examining a pink sapphire under a gemmological microscope.
Investing in gemstones may be. It is a geoscience and a branch of mineralogy. Many gemstones have recognizable chemical compositions.
Gemology or gemmology is the science dealing with natural and artificial gemstone materials. Jewelers or people associated within the gem industry often use the terms gem gemstone and precious stoneinterchangeably. Following transportation they react with other elements to produce new minerals or may be deposited directly from solutions.
However certain rocks such as lapis lazuli or organic materials that are not minerals such as amber or jet are also used for jewelry and are therefore often considered to be gemstones as well. Birthstones are gems assigned to the month of a person s birth. Diamond is simply carbon.
Simply defined a gemis a precious or semiprecious stone especially when cut and polished or engraved however this definition is broad and falls apart when examined closely. However certain rocks such as lapis lazuli and opal and occasionally organic materials that are not minerals such as amber jet and pearl are also used for jewelry and are therefore often. Some jewelers and many non jewelers are academically trained gemologists and are qualified to identify and evaluate gems.
100 gems 100 gems photos of over 100 beautiful gems ranging from the popular to the obscure.
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