Resultado da Busca
Há 1 dia · 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.
- English (Uk)
Established in 1931, the Gemological Institute of America...
- GemKids For Educators
Spanish conquistadors, Inca kings, and pharaohs treasured...
- Solid Laboratory-Grown Single-Crystal Diamond Ring
Carved single-crystal diamond rings are rare, with few...
- India Gem & Jewellery Show
Trade Show India Gem & Jewellery Show – GJS. September 30 -...
- Bharat Diamond Week 2023
Trade Show Bharat Diamond Week 2023. October 2 - 4, 2023...
- English (Uk)
Há 3 dias · 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. GIA's D-to-Z color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and ...
Há 5 dias · Ruby is one variety of the corundum mineral species, which also includes sapphire. Ruby is highly regarded and can command high per-carat prices. It is arguably one of the most important gems in the colored stone market. In its purest form, the mineral corundum is colorless. Trace elements that become part of the mineral’s crystal structure ...
22 de abr. de 2024 · Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. GIA’s Diamond Grading Reports have a long history rooted in GIA’s legacy as the leading source of knowledge, standards and education in gems and jewelry.
Há 5 dias · The International Gemological Institute (IGI) introduces Light Performance Grading Reports for round brilliant-cut diamonds, offering a comprehensive assessment of their exceptional optical qualities
Há 6 dias · GIA 4Cs Carat Weight. Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. (Don’t confuse carat with karat, as in “18K gold,” which refers to gold purity.) Just as a dollar is divided into 100 pennies, a carat is divided into 100 points.
21 de abr. de 2024 · As former president of the Gemological Institute of America Bill Boyajian notes, "Who could assemble this many 100-carat and larger stones? And what a treat it’s going to be for the audience. Once in a lifetime."
