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Process - Mining to Certification

Coloured Diamond In The Rough

Diamonds are one of nature’s rarest and hardest materials. Diamonds were formed billions of years ago under tremendous heat and pressure almost 200 km under the earth’s surface. More recently, volcanic eruptions brought diamond-bearing rocks known as kimberlite stones to the earth’s surface. Of all the diamonds mined today, the rarest are naturally coloured diamonds. To understand how precious they are, for every 10,000 carats of diamonds that are cut only 1 carat is a coloured diamond! The last coloured diamond mine found was over 20 years ago, increasing the value of coloured diamonds through diminishing supplies.

Cutting And Polishing

Once mined and sorted, a gem quality rough diamond will be converted into a gem through a multi-step process called “cutting”. Each diamond is assessed before cutting to optimize its luster and beauty. This highly delicate procedure requires skills, scientific knowledge, tools and experience. The weight reduction when cutting can be up to 50% of the original stone. Through history, popularity in different types of cuts have evolved, with the most popular today being the 58 cut brilliant stone. After cutting, the diamond is then shaped in different stages of polishing. This cut and polish step can take anywhere from several hours to years for the most intricate gems.

Finished Gem

Natural coloured diamonds are some of nature’s most rare and coveted treasures. Once it has been turned from a rough diamond into a gem, it is then ready to be taken to a lab to be assessed and certified. As a tangible hard asset, natural coloured diamonds have increased in value over the years, and rare natural coloured diamonds have increased in value exponentially.

Signed, Sealed And Certified

Benchmark Conversion natural coloured diamonds are certified by the GIA, (Gemological Institute of America), the world’s foremost authority on natural coloured diamonds. As a public benefit, nonprofit institute, the GIA governs the standards and regulations of gems through education, research and laboratory services. All coloured diamonds acquired through Benchmark Conversion are protected and wax sealed in a clear Lucite case with proper certification, so the client is assured of the integrity of their purchase.

Want To Explore Even Further?

To find out more information about Natural Coloured Diamonds contact Benchmark Conversion