Irradiation The alteration of a gemstone's color through the use of radiation. Questo è spesso seguito da un processo di riscaldamento. Il colore migliorato delle pietre preziose irradiate è permanente. New And Future Technologies Techniques for enhancing colored gemstones, rilevabile o meno, sono in continuo sviluppo. Questi potrebbero essere difficili, o in rari casi, impossible to [...]
Archivio Categoria: Notizie di gioielli
Heat Treatment The application of heat to enhance the color and/or clarity of gemstones has been a common practice around the globe for centuries. It is part of the standard polishing and finishing process for many colored gemstones. Come tale, it is accepted by the jewelry industry and the American Gem Trade Association. The enhanced [...]
Blue Nile's colored Gemstone Enhancement Policy Blue Nile offers consumers only the highest quality, authentic gemstones. Our colored gemstones undergo rigorous internal inspections by our trained gemologists to ensure they meet our stringent quality standards. Due to their rarity and unique visual properties, nearly all colored gemstones sold at fine jewelers, including Blue Nile, Sono [...]
Different Densities The carat weight of a gemstone does not necessarily allow you to accurately envision the size of the gemstone. Diverse pietre preziose hanno densità diverse (massa per unità di volume), quindi due gemme che sembrano avere la stessa dimensione potrebbero in realtà avere pesi molto diversi. Per esempio, a ruby is more dense than a [...]
Gemstone Cut Look at the gemstone in the setting and ensure that all the facets are symmetrical. An asymmetrically-cut crown indicates a gemstone of low-quality. In all cases, a well-cut gemstone is symmetrical and reflects light evenly across the surface, and the polish is smooth, without any nicks or scratches. These are the characteristics that [...]
Gemstone Cut Colored gemstones are generally cut to maximize the beauty of their color. To recognize quality in the cut of a gemstone, there are several points to consider. What to Look For A good cut showcases the gemstone's color, diminishes its inclusions, and exhibits good overall symmetry and proportion. Because gemstone color can vary, [...]
Identifying Marks Because gemstones form under unique circumstances, each individual gemstone is comprised of a combination of trace minerals, which create a unique set of identifying marks or inclusions. Inclusions will not necessarily detract from the beauty or desirability of a colored gemstone. What to Look For When considering a colored gemstone's clarity, you should [...]
Tone Tone represents the depth of color, ranging from colorless to black. Gemstone tone is described as "leggero," "medium-light," "medio," "medium-dark," E "dark." Blue Nile offers gemstones with the most sought-after tones that fall within the medium-light to medium-dark range. For all of our gemstone jewelry, you'll find any tone variations are called out in [...]
Gemstone Color The beautiful color of a gemstone is its most defining characteristic, and many jewelers consider it to be the most important evaluation criterion. When deciding upon gemstone color, examine hue, tono, e saturazione. Hue The most valuable gemstones are those that exhibit a pure color and only "lieve" hues of other colors in [...]
Educazione alle pietre preziose Questa guida definisce le cinque caratteristiche essenziali della qualità delle pietre preziose. Comprendendo queste caratteristiche, you'll be able to shop with confidence. Stampa queste informazioni utili e portale con te durante lo shopping in modo da poter fare la scelta migliore su un bellissimo gioiello con pietre preziose. Colore L'industria della gioielleria riconosce la massima qualità [...]