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4 days ago · 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.
5 days ago · Cleaning. Warm soapy water is always safe. Ultrasonic and steam cleaners are usually safe for untreated, heat-treated, and lattice diffusion treated stones. Fracture-filled, cavity-filled, or dyed material should only be cleaned with a damp cloth. Treatment and durability considerations.
4 days ago · Zircon occurs in an array of colors. Its wide and varied palette of yellow, green, red, reddish brown, and blue hues makes it a favorite among collectors as well as informed consumers. Zircon crystals grow in many different types of rock and possess a range of optical and physical properties.
2 days ago · 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 precise viewing conditions to masterstones of established color value.
2 days ago · Diamond carat weight is the measurement of how much a diamond weighs. A metric "carat" is defined as 200 milligrams. Each carat can be subdivided into 100 'points.'. This allows very precise measurements to the hundredth decimal place.
2 days ago · How to Choose a Diamond. Play the informative 4- or 10-minute videos for your customers to help explain the 4Cs and how GIA grades diamonds. You may also want to share these videos with your sales staff to help educate them about GIA, the 4Cs and grading reports.
3 days ago · Book now at Cantina Gia in Ottawa, ON. Explore menu, see photos and read 902 reviews: "We came in on Sunday at 1 PM. On Sundays, we were told only the Brunch menu is available until 3 PM. Nevertheless the offerings were delicious and good ...".
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