Glossary of the Gemtrade

Connoisseurs do use the term freely, yet it is hard to make them define it. Probably it is best understood by its antonyms: A bad crystal is dull, cloudy, indifferent, non-thrilling, undefined, muddy, fuzzy, boring etc. Cut: Process and result of faceting and polishing a gemstone replica watches. Dead: Rough that will not have luster after the cut, or a very badly faceted gemstone with no luster, mostly due to inclusions or a very bad ;crystal;.Energy: Expression used to describe a gems character on an emotional level. One may clearly perceive a gemstone as tranquil, intense or lively. Not scientific but often helpful. Extinct: Gem which does not throw back light and thus seems dark.A gemstone is clean if you need a lens to see the inclusions.Color Change/Shift: A color change gemstone will change its color when moved from day- to artificial light. If the two colors are very close to each other (e.g. violet and blue or red and purple) it is more accurate to speak of a color shift. Most gems show some sort of color change in different lights but only an obvious strong change would justify an extra charge. It should be mentioned in the ;certificate;.Cooked: Heated gemstone. Heavily cooked gems adorn 99% of all ready to buy jewelry. Crystal: A good crystal is one of the most mysterious qualities of a gemstone.