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4 giorni fa · Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.
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Established in 1931, the Gemological Institute of America...
- GemKids For Educators
Spanish conquistadors, Inca kings, and pharaohs treasured...
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We offer the finest gem and jewelry education in the world with curriculum developed from our groundbreaking research and delivered by the industry’s leading experts. GIA gives you the knowledge and practical skills to translate your love for gems and jewelry into a rewarding career.
2 giorni fa · Il 6 settembre 2023 il Gemological Institute of America (GIA) ha annunciato che utilizzerà, nella sezione commenti dei suoi report, il termine commerciale “Hanadama”, storicamente attestato, per distinguere una specifica qualità delle perle coltivate Akoya.
2 giorni fa · Diamond Color. The color evaluation of most gem-quality diamonds is based on the absence of color. A chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value.
4 giorni fa · Citrine is one of the most popular yellow gems on the market. This designer cut shows off the warm glow of citrine’s sunny color. – Lydia Dyer, gem courtesy John Dyer & Co. Citrine—the transparent, pale yellow to brownish orange variety of quartz—is rare in nature.
2 giorni fa · Diamond Clarity. Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can result in a variety of internal characteristics called 'inclusions' and external characteristics called 'blemishes.'
4 giorni fa · Diamond Cut. Diamonds are renowned for their ability to transmit light and sparkle so intensely. We often think of a diamond's cut as shape (round, emerald, pear), but a diamond's cut grade is really about how well a diamond's facets interact with light.
