Gemstones Or Not ?

Take a look at these colorful, lacy gemstones. They can be found around the world in jewelry and as collectable pieces. They're quite fascinating to look at with their layers upon layers of color. But do you know where they come from?
Although there's a close resemblance, these aren't agate. However, you could argue that these are technically sedimentary, but not in the same way as layers of silt and clay solidifying into stone over millions of years. In fact, these colorful, sparkling gemstones developed in mere decades. Sounds impossible? It's not. Of course, these aren't really stones, either. So what are these things?
This is fordite, also known as Detroit or motor agate. It's an unlikely and unexpectedly beautiful byproduct of the automotive industry, which is usually known for spewing pollutants into the environment. Fordite can refer to paint layers from any factory, not just Ford, and the term is in no way connected to the company. It's just a tad easier to say than General Motorsite.

Cars used to be spray painted by hand, and so the racks in the painting bays would be covered with layers upon layers of primers and paints over the years. The paint would harden in the ovens and build up into thick, durable layers over time. When the paint was removed, people noticed the hidden beauty of its layers, soon discovering that the material was fairly easy to cut and polish like a gemstone.
The "stones" became immediately popular with both gem enthusiasts and the general public. Today, you can find fordite in jewelry and on collectors' shelves around the world.

However, like real gemstones, whose mines can be depleted, there's also a finite amount of fordite. Modern cars aren't spray painted anymore; instead, they're painted with an electrostatic process that wastes almost no paint. This means that fordite, despite its mundane origins, is a sought-after material.

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