The world’s love of diamonds had its start in India, where diamonds were gathered from the country’s rivers and streams. Some historians estimate that India was trading in diamonds as early as the fourth century BC.
Diamond’s characteristic chemical composition and crystal structure make it a unique member of the mineral kingdom. Diamond is the only gem made of a single element: It is typically about 99.95 percent carbon. The other 0.05 percent can include one or more trace elements, which are atoms that aren’t part of the diamond’s essential chemistry.
Diamond Most diamonds formed more than a billion years ago! They form about 100 miles (161 kilometers) below the earth’s surface, where the temperature and pressure are just right. Diamonds are the hardest natural material on earth. They stand for fearlessness and invincibility, and are a symbol of love.
Examines new developments in the story of diamond formation and their extraction from the earth.
The bond is one of the most important (but often overlooked) components of diamond tooling. The tools are often categorized into a select few groupings like hard, medium or soft metal-bond, ...
The machining of stone using diamond tools represents a critical intersection of advanced materials and cutting-edge engineering. The performance and wear characteristics of these tools are central to ...
Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.
The Hope diamond, perhaps the world’s most legendary gem, arrived at its present home at the Smithsonian Institution on Nov. 10, 1958 via the U.S. mail – albeit registered first class! The Uncle Sam Diamond To date the Uncle Sam, discovered in 1924, is the largest diamond ever found in the U.S.