Interesting facts and information about the diamond as a mineral and as a gemstone. We bet you've never heard these cool facts about diamonds before. As a GIA Graduate Gemologist, I enjoy these tidbits of information to. Diamond is a metastable allotrope of carbon, where the carbon atoms are arranged in a This is a featured article. Click here for more information. Page semi- Crystal habit : Octahedral. Some of them are special, produced by certain companies, for example, PhoenixCushionSole Mio diamonds. The majority of trader depot available synthetic diamonds are yellow and are produced by gmx.de kostenlos high-pressure high-temperature HPHT processes. It is formed deep in the mantle, and is only brought to the surface via kimberlite pipes, lamprophyres, eclogites and other rocks that originate deep within the mantle. Lab information about diamonds diamonds display the same chemical structure and physical properties as diamonds mined from the earth. Interaction Help About Wikipedia Community portal Recent changes Contact page. The Gem of Heat and Pressure Diamonds are high-temperature, high-pressure minerals. A diamond, although just a crystal, is the hardest substance on earth and has for centuries intrigued and awed people by its cut and polished splendor. Historically, diamonds were found only in alluvial deposits in Guntur and Krishna district of the Krishna River delta in Southern India. Retrieved May 5, Retrieved November 3, Diamond cubic Lonsdaleite hexagonal diamond. It needs to address a large number of issues, bears much responsibility, and therefore can last years in case of unique diamonds. Aventurine Agate Amethyst Beryl Carnelian Chrysoberyl Diamond Diopside Emerald Garnet Jade Jasper Lapis lazuli Larimar Malachite Marcasite Moonstone Obsidian Onyx Opal Pearl Peridot Prasiolite Quartz Ruby Sapphire Sodalite Spinel Sunstone Tanzanite Tiger's eye Topaz Tourmaline Turquoise Zircon.