When people think of diamonds, they tend to think of  jewellery, such as diamond ringsearrings, or necklaces. However, as the hardest naturally occurring substance on the planet, diamonds are used for many other, commonly unknown, purposes as well. Keep reading to learn about the unusual uses of diamonds.

Speaker Domes

Diamonds are believed to actually enhance the performance of high quality speakers. Because diamonds are a very stiff material, they can vibrate rapidly when made into a thin dome without the deformation that can degrade sound quality.


Antidote for Poison/Disease

While there is no scientific evidence backing this usage, diamonds are often used as antidotes in various places for poisons or diseases. The belief that swallowing diamonds would ward off illness stems from the days of the plague. The lower classes felt the deadly effects of the plague before the upper classes did, a result of their inferior health care and dirtier living conditions. However, many poor people came to the conclusion that it was the diamonds that the wealthy people were swallowing that were keeping them healthy.



Diamond windows are made from very thin diamond membranes. These thin diamond membranes are used to cover openings in things like lasers, vacuum chambers, and x-ray machines. Diamond membranes are durable, resistant to heat, and transparent, making them highly useful.



Because diamonds are so hard and durable, they are ideal for grinding, cutting, drilling, and polishing. When used as an abrasive, very small pieces of diamond are embedded into grinding wheels, saw blades, or drill bits.


Heat Sinks

A heat sink is a passive component in an electronic system that cools a device by dissipating heat into the surrounding air. Diamonds have very high thermal conductivity, which means they are excellent heat conductors. Because of this, diamonds are used as a material for heat sinks.



Diamonds are used for the engraving of stones made of granite, quartz, and other very hard materials. Because diamonds will not break or even scratch against the surfaces of other tough stones, using them for engraving is quite practical as the work can be completed without having to worry about replacing the engraving bit.


Potential Future Uses

In the future, diamonds may be used for surgical tools, medical devices, and prosthetic human joints. Research is being conducted into whether or not the Earth's hardest naturally occurring substance could be of any use to the medical community.