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What do a glittering diamond and a lead pencil have in common? Diamonds are very hard and the graphite of the pencil’s tip is very soft. These two different substances contain a wonderful proof of creation called carbon.A rough, unpolished diamond is the hardest of all minerals. For this reason, a crystal diamond is used to cut and to drill all kinds of material and is also used as an abrasive to smooth surfaces.
Tags: diamondsThe first wave of gem-quality manufactured diamonds hit the market late in 2003. Man-made diamonds is nothing new and the technology has been available since the mid 19th century. Small diamond crystals were created for industrial purposes such as grinding wheels, drill bits and saw blades. What is new is that a Florida based company can now produce rough 3-carat gem-quality diamonds 24 hours a day, seven days a week, at a cost of less than $100 dollars.
Tags: bracelets, diamonds, gemstone, jewelry, loose gems, necklaces, rings, watches