Fordite, a Shakespearean Fairy Tale: or, How to Turn Car Paint Into Jewelry

Written By Steven Cruse

It may sound like the name of a precious gemstone, but fordite is actually a by-product of automotive paint application. However, that hasn’t stopped designers from recycling it and selling it as jewelry!

Sometimes referred to as “Detroit agate” or “motor agate,” fordite is actually little more than a fancy name for hardened automotive paint slag. That said, it’s so vividly splendid that it looks like a precious mineral, one which formed in the Earth’s crust over the span of millions of years.

Fordite is a lapidarist's term for polished pieces of finely-layered, multicolored paint masses derived from painting rooms in automobile factories. The name is in reference to the <a href=

But fordite is actually man-made. And its fascinating story is no older than a few decades.

What’s agate to fordite, or fordite to agate? (Hint: nothing!)

Crazy lace agate is a type of agate with a chaotic, multi-colored banding pattern.
Typically found in Mexico, “crazy lace” agate is a type of agate with a chaotic, multi-colored banding pattern, arguably most similar to fordite at first glance of all agate types. Here, a 15.0 in (38.2 cm) wide, 43.2 lb (19.6 kg) specimen from Chihuahua, Mexico next to a tennis ball. (Credit: WIkimedia)

Despite being often sold under the swanky names Detroit agate or motor agate, fordite has no relation to agate whatsoever.

Like most other gemstones excluding diamonds and peridots, agates form naturally in the Earth’s crust, in their case inside volcanic or metamorphic rocks. When the rocks are split open, the agates are revealed as beautiful layers, formed from bands of contrasting colors. Ever since the time of Ancient Greece, they have been consistently valued as semiprecious stones and regularly used to make expensive jewelry.

Fordite looks very similar to real agate, with breathtaking swirling patterns of vivid and attractive colors. However, despite its gecko-like abilities to mimic a real gemstone, fordite is actually a man-made product. Whereas a piece of agate is made from fine, fibrous crystals of quartz, a piece of fordite is unglamorously made from—enamel slag!

What’s in a name: fordite, Detroit agate or motor agate?

Fordite got its name from the Ford Motor Company.

From the 1920s to the 1980s, Ford and several other car companies used acrylic car paint and a specific type of paint process, resulting in the formation of fordite as a by-product. Although neither the process nor the paints were specifically owned by Ford, the name quickly caught on.

Moreover, as Ford was headquartered in Detroit—as were the other two of the “Big Three” auto manufacturers, General Motors, and Chrysler—the city swiftly became the Mecca of fordite production. Hence, the other two names, Detroit agate, and motor agate, the former honoring the faux jewelry’s place of birth, and the latter a nod to Ford’s biggest rival, General Motors.

The unthought-on accident is guilty: the origin story of fordite

The origin of fordite is quite an interesting story, and as with all great stories, it begins long before its protagonist even existed.

Automotive paint: the early history

1925 Ford Model T
When all cars were black. A 1925 Ford Model T. (Credit: Wikimedia)

Cars were invented in 1886 but didn’t become widely available until 1908, when the Ford Model T was launched, kickstarting the rapid adoption of cars in the US.

Now, Ford Model T was black—as were pretty much all cars at the time. During the infancy of the American automobile industry, color was not an issue for either producers or owners.

However, as the industry grew rapidly after World War I, customer demand for different car paint colors followed suit. People wanted their cars to look different, so automotive companies began offering more and more color choices.

To meet their quotas, new methods of painting cars and car bodies had to be invented. One of these, called hand-spraying, turned out to be the most efficient. Accidentally, it also turned out to be the origin story of fordite.

The by-products of spray painting

This is how hand-spraying was done.

Each car would be taken to a painting bay and mounted on special skids or tracks. The car bodies would then be sprayed with enamel paints. As each paint color was applied, excess paint spilled over onto the skids of the painting bays, getting stuck in the grooves. Each new color added another layer to these buildups of paint slag, eventually creating the agate-like pattern of fordite.

A general view of the paint shop at a car factory, somewhere in Britain. According to the original caption, the vehicle on the left in a spray booth "is starting on a 16-hour journey, will receive 3 coats of filler, 4 of primer, and 2 of cellulose, will pass through the long drying and hardening ovens, and return, like the bodies on the right, ready for body trimming and final assembly".
A general view of the paint shop at a car factory, somewhere in Britain. According to the original caption, the vehicle on the left in a spray booth “is starting on a 16-hour journey, will receive 3 coats of filler, 4 of primer, and 2 of cellulose, will pass through the long drying and hardening ovens, and return, like the bodies on the right, ready for body trimming and final assembly”. (Credit and description: IWM/Wikimedia)

To finish the paint job, each vehicle frame was wheeled into an oven on its skids and baked to cure the enamel paint. This meant that the car paint overspray on the skids would also be baked and hardened. Over time, the overspray would gradually accumulate and eventually become so thick that it would impede the process. The skids would then be thrown away and replaced, still covered in residual baked enamels—that is, fordite.

From rags to riches

It didn’t take long for automotive plant workers to figure out the sheer beauty of the residual backed enamels. When hardened, car paint can be cut and polished—just like a true gemstone. It sure helped that it looked like one too.

It was this that attracted the attention of post-World War II jewelry makers, and drove up the demand for fordite. Pretty soon, American lapidarists—i.e., people who collect gems and precious stones—started collecting raw fordite deposits from car factories.

Those thrown-out tracks and skids suddenly became something quite valuable—”fordite ore mines”!

Raw and unpolished fordite
Raw and unpolished fordite (Credit: Deidre Woolard/Flickr)

Beauty, truth and rarity: or, why is fordite so expensive?

Although water-based enamel paint is still widely used in the car industry today, the way in which the paint is applied has evolved a lot.

Rather than hand-spraying the cars, most carmakers now use a more efficient electrostatic process. This new method is not only faster and cheaper, but also much cleaner—which has been a requirement for car manufacturers ever since the Volatile Organic Compound (VOC) regulations were introduced in the 1980s.

Unfortunately, as the electrostatic process pretty much magnetizes the enamels to the car bodies, far less enamel paint builds up on the skids today, if at all. As a result, those “fordite mines” have been pretty much a thing of the past for decades, making fordite a prized commodity for jewelry designers and lapidarists alike. Especially in the US.

Each fordite plays many parts

One of the most incredible things about fordite is that each piece helps chart the history of the American automotive industry. The layers on every piece of fordite tell the story of different car marques, models, and special editions that are no longer in production. The most sought-after pieces even contain paints from special color runs of limited-edition cars that are as highly coveted by gemstone enthusiasts as the cars themselves are by car collectors!

Different types of fordite.
Different types of fordite jewelry (type 1 mostly), on display. (Credit: Derek K. Miller/Flickr)

It’s not just that each piece of fordite is a piece of American history; it’s also that each piece is singularly ornamented, displaying numerous vivid colors in intricate and beautiful patterns. Some people have estimated that a one-inch piece of fordite can be made up of nearly 1000 layers of color! Thus, you can be sure that each is completely unique. Still, experts tend to differentiate between four main types of fordite:

  • Fordite type 1 is known as “separated color fordite.” Its name comes from the layers of grey primer, which visibly separate all of the other color layers from each other. All of the other fordites are “color-on-color” types.
  • Fordite type 2 is quite rare, as it usually includes metallic or opaque colors that were popular for only short periods of time.
  • Fordite type 3 is usually a striped type of fordite, but it can also include orbital patterns, making it look a bit like a tie-dye design.
  • Fordite type 4 has bleeding color layers; sometimes, it can also show signs of pitting, due to the air bubbles trapped as the piece began to harden.

All hail fordite, the industrial gemstone of our times!

Almost as soon as factory workers first began taking raw fordite pieces home, artists and jewelers realized how suitable the material was for making jewelry. With the techniques that produced it becoming obsolete—and fordite thus becoming as rare as a fire rainbow—it has only gained in popularity since. In fact, it is currently considered a booming industry.

Like any natural gemstone, fordite can be polished to make it smoother. As an added bonus, polishing it brings out the dramatic hues of each color, making fordite jewelry pieces even more appealing. There’s a reason why Cindy Dempsey—the founder of one of the world’s first fordite jewelry companies, Urban Relic Design—describes the material as an “industrial gemstone;” in many ways, it is nothing less.

In today’s climate of recycling and sustainability, fordite is a great example of how waste products can be turned into stunning works of art. It’s also a great example of how American history can be preserved and aestheticized to be worn proudly on one’s sleeve—quite literally!