搜尋結果
3 天前 · Diamond. Typically yellow, brown, or gray to colorless. Less often blue, green, black, translucent white, pink, violet, orange, purple, and red. Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon ...
2024年5月24日 · Diamond is a mineral composed of pure carbon and the hardest naturally occurring substance. Learn about its history, mining, colour, brilliance, and industrial and gem uses from Britannica.
- The Editors of Encyclopaedia Britannica
其他人也問了
What is the atomic structure of diamond?
What is diamond-like carbon?
What makes a diamond a good diamond?
What color is a diamond?
5 天前 · Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a western perspective, the term is restricted to durable ornaments, excluding flowers for example.
2024年5月19日 · A Tradition Of Science and Education. 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.
2024年5月24日 · About. 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.
2024年5月22日 · Stratapax. synthetic gem. Recent News. May 21, 2024, 10:49 AM ET (Live Science) Scientists grow diamonds from scratch in 15 minutes thanks to groundbreaking new process. synthetic diamond, man-made diamond that is usually produced by subjecting graphite to very high temperatures and pressures.
1 天前 · Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure, the closer it comes, the higher its value.
