Diamond is a perfect "10", defining the top of the hardness scale, and by absolute measures four times harder than sapphire (which is #9 on that scale).
“Manmade diamonds” are actually more prevalent than natural diamonds. Since 1950s, laboratories have manufactured diamonds, either by forcing carbon atoms to juncture under extreme heat and pressure or by reducing methane gas. Depending on the particular company’s formulation, the process can take days to weeks. Though the process is sped up, diamond formation is still a sensitive process where conditions fluctuate, yielding diamonds just as flawed and unique as those found in nature.
All diamond shapes are not created equally. Some require larger rough diamonds from the start. Others waste more rough diamond than their peers. And some require jewelers with higher levels of expertise. Round cuts, which remove more of the rough diamond than most other cuts, are more expensive to produce. By comparison, an emerald cut diamond with similar grades in carat weight, color, clarity, and cut, may cost 30% less than its round cut counterpart. However, since over 75% of the diamonds sold are round cuts, if the diamond ring may ever need to be resold, it should be easier to resell if the stone is a round cut.
Diamonds are most popularly used as gemstones for making jewelries from time immemorial because they form the finest ornaments. They have great significance in the industrial sectors also due to their toughness. They are used as appropriate cutting and milling instruments. Their industrial utility is further enhanced by the fact that diamonds are excellent abrasives.
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