Where Do Diamonds Really Come From?

The process may surprise you

A lot of myth and allure surrounds the true origin of a diamond. Over the years, the industry has come under indirect scrutiny over its practices whilst the media coins phrases such as ‘blood diamonds’ and ‘conflict diamonds’ only compounding the negative notions surrounding the sourcing and production of this timeless gem. Unless you’re directly involved in the trade: mining, manufacturing or wholesaling, the reality of a diamond's arduous journey to the consumer's hand is somewhat of a mystery to most. Furthermore, with the popularity of synthetic diamonds and diamond simulant alternatives on the rise, it is worth taking a look at how remarkable the journey of a natural diamond truly is. Although one article is not enough to address these issues in detail, I dig deeper to help you discover how complicated this extraordinary process is.


Earliest discovery of diamonds | Facets SingaporeIt all begins with the discovery process. Diamond mine exploration can take decades and cost billions of dollars. In 1870, large diamond deposits were discovered near Kimberly in South Africa. Africa surpasses India and Brazil as the world’s largest diamond producer.


Alluvial Mining

blog-imgDiggers scoop up the deposited sand layers up to 60m deep to reach diamond bearing alluvial deposits, usually found in rivers or near rivers.

Kimberlite Pipe Mining

1-rqUJh5zwnOdbbgpHENS-owMechanised methods are needed to dig deeper due to today’s high demand. High-technology drills and cranes are used to extract diamond-bearing rocks. Approximately 250 tons of ore is needed to yield just 1 carat of gem-quality diamond.

Earth Moving

1-gTjEUQ09Y_gxKUyqq4EjqADiamond bearing ore is loaded onto trucks to be transported to washing equipment and processing plants.

Crushing & Milling

1-c78AhNbc2_WWMZVMiI3AzgThe technique used to separate diamond aggregate from soil and rock (ore), along with washing, screening and heavy media separation. The softer ore is crushed leaving the heavier and harder diamond unscathed.

Grease Separation

1-TtCpken-ePL33zRseT-d_AThe crushed ore is transferred to a sophisticated grease and water belt — as diamonds attract grease, the diamonds stick to the grease and the rest are washed out with high pressure water and air jets.

Chemical Wash

1-4h368qnTXydhRWZ6VMfMqARough diamond crystals are chemically cleansed to be rid of surface impurities. This is done without affecting their natural properties. Onward to sorting.

Sizing & Sorting

1-gMj-G_5hK_xQ6IvmN5V7KQThe rough diamonds are sorted into various sizes using sieves, pans and automated computer-aided machines.

Market Classification

1-QZ2nFZLXyG_bLnvD9g0M_gThe rough diamonds are then classified under the various gem and industrial categories. Over 80% of naturally occurring diamond is actually used for industrial purposes.


1-fF8tANl_ipAnoXyXZsZ4ZwThe diamonds for the gem market are then cut to shape using cleaving, sawing and bruting techniques to the right proportions. This is the first step to a polished diamond that we are all familiar with.


Diamond polishing | Facets SingaporeA facet is a tiny planar surface that traps light, disperses it and creates a sparkle. Each facet on a diamond is polished one by one to bring out its brilliance. A modern round brilliant diamond has 57 facets, all polished tirelessly by hand.

See Also: Our Complete Guide to Natural Diamonds

4C Grading

1-P4B2aY5wmABH4J3GCfeEZgExperts sort the diamonds further according to different categories based on carat, colour, cut and clarity. Labs such as the GIA, IGI, HRD & EGL issue unique reports for each individual diamond.


Jewellery Manufacturing

1-TYJpfaqUQvyNvnZEXMYhQwBased on a design sketch, a wax mold is made to set diamonds and other gemstones onto metals such as silver, gold and platinumHands of the Consumer

Diamonds in the hands of the happy Consumer | Facets SingaporeIn the hands of the Consumer 

The diamond’s journey ends in the hands of the consumer, in your hands, but the story continues…
We love educating our customers on everything Diamonds. If you’d like to learn more, talk to one of our professionals today!
Nikhil H.

Written by Nikhil H.

Digital Creator | Founder of @csgo2asia | @northeastern & @startupInst Alumni | www.nikhathi.com.
Graduate from North Eastern University in Boston, this esports team owner is also an expert on certified diamonds. Trained at GIA, New York, Nikhil carries with him 5-years of experience in the diamond business and has a fresh, unconventional writing style that resonates with today's Gen Y and Z.

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