12 Hardest Minerals Found The Earth (2023)

To explore some of the hardest minerals found on our planet. These incredible gems have withstood the test of time and possess a remarkable strength that truly captivates us. From diamonds that sparkle like stars to corundum that glows with vibrant hues, get ready to be amazed by nature’s toughest creations. Join us as we delve into the world of these extraordinary minerals and uncover their hidden mysteries. Prepare yourself for a thrilling adventure as we unveil the 12 hardest minerals found on Earth!



Diamonds are known as the hardest minerals found on Earth, and they have a special place in our hearts. These precious gems are formed deep beneath the Earth’s surface under intense heat and pressure. Their exceptional hardness makes them ideal for use in jewelry and industrial applications.

The allure of diamonds lies not only in their unparalleled hardness but also in their sparkling beauty. The way they catch the light and reflect it back is truly mesmerizing. Diamonds come in various colors, from colorless to shades of yellow, brown, and even rare hues like blue or pink.

But what makes diamonds so hard? It all comes down to their atomic structure. Each carbon atom within a diamond is bonded tightly to four others through strong covalent bonds. This arrangement creates an incredibly rigid lattice structure that gives diamonds their remarkable toughness.

Due to its remarkable properties, diamond has many practical uses beyond adorning engagement rings or necklaces. Its extreme hardness makes it ideal for cutting tools used in industries such as mining and construction. Diamond-coated drill bits can cut through tough materials with ease.

In recent years, lab-grown diamonds have become increasingly popular as an ethical alternative to mined ones. These man-made diamonds share the same physical properties as natural ones but are created under controlled laboratory conditions using high-pressure high-temperature (HPHT) or chemical vapor deposition (CVD) methods.

Whether you appreciate diamonds for their breathtaking beauty or admire them for their scientific marvels, there is no denying that these exquisite gemstones hold a special place among the hardest minerals on Earth.



Moissanite is a fascinating mineral that has gained popularity as an alternative to diamonds. Discovered in 1893 by French chemist Henri Moissan, it was originally mistaken for diamond due to its similar appearance. However, further analysis revealed its unique properties.

One of the most remarkable aspects of moissanite is its incredible hardness. With a score of 9.25 on the Mohs scale, it falls just below diamond in terms of hardness. This makes it one of the hardest minerals found on Earth.

What sets moissanite apart from other gemstones is its exceptional brilliance and fire. Its refractive index surpasses that of any other gemstone, giving it a dazzling sparkle that rivals even the finest diamonds.

In addition to its physical attributes, moissanite also has environmental advantages over traditional diamond mining. As a lab-created stone, it reduces the need for destructive mining practices and minimizes harm to ecosystems.

With all these characteristics combined, moissanite offers an attractive option for those seeking beauty and durability without compromising ethical considerations or breaking their budget.



Corundum, known for its remarkable hardness and stunning range of colors, is one of the hardest minerals found on Earth. Its name is derived from the Sanskrit word “kuruvinda,” meaning ruby. While rubies and sapphires are perhaps the most well-known forms of corundum, this mineral actually exists in a variety of colors.

With a Mohs hardness rating of 9, corundum falls just below diamond in terms of hardness. It is composed primarily of aluminum oxide and typically forms in metamorphic or igneous rocks. The deep red hue of rubies captures the attention and hearts of many gemstone enthusiasts, while blue sapphires evoke a sense of elegance and royalty.

In addition to its beauty, corundum also possesses excellent durability. Its toughness allows it to withstand extreme conditions without easily scratching or breaking. This makes it ideal for use in industrial applications such as cutting tools, grinding wheels, and abrasives.

While diamonds may be deemed as a girl’s best friend, corundum holds its own with its vibrant hues and impressive strength. Whether you’re fascinated by rubies’ passionate reds or captivated by sapphires’ calming blues, there’s no denying that corundum is truly one tough mineral worthy of admiration



Topaz is a stunning mineral that captivates the eyes with its radiant beauty. Its name derives from the Sanskrit word “tapas,” meaning fire, and it’s easy to see why. With its vibrant colors ranging from golden yellows to deep blues, topaz is truly a gemstone that demands attention.

Not only is topaz visually striking, but it also possesses impressive hardness. It ranks 8 on the Mohs scale of mineral hardness, making it one of the hardest minerals found on Earth. This durability makes topaz an excellent choice for jewelry settings as it can withstand daily wear and tear without losing its luster.

In addition to being hard, topaz is also known for its pleochroism, which means that it can exhibit different colors when viewed from different angles. This unique characteristic adds another layer of intrigue to this already mesmerizing mineral.

Topaz has been used throughout history for various purposes beyond adornment. Ancient civilizations believed that this stone possessed healing properties and could promote emotional well-being. Whether or not you believe in such claims, there’s no denying the allure of topaz.

Whether set into a ring, pendant, or earrings, topaz shines bright and exudes elegance like few other minerals can. Its combination of hardness and beauty make it a sought-after gemstone by collectors and jewelry enthusiasts alike.

So next time you come across a piece of jewelry adorned with this remarkable mineral, take a moment to appreciate the natural wonder that is topaz!



Zircon is a mesmerizing mineral that captivates with its stunning array of colors. From deep blues to fiery oranges, zircon’s beauty knows no bounds. But don’t let its dazzling appearance fool you – this gemstone is one tough cookie!

One of the hardest minerals found on Earth, zircon boasts an impressive hardness rating of 7.5 on the Mohs scale. It can withstand scratches and wear, making it an ideal choice for jewelry that lasts a lifetime.

But zircon’s durability isn’t its only claim to fame. This remarkable mineral also possesses high refractive index and dispersion, giving it exceptional brilliance and fire when cut and polished.

Although zircon has been used as a gemstone for centuries, it also serves important industrial purposes. Its heat resistance makes it valuable in the production of ceramics and refractory materials.

So whether you’re admiring the vibrant hues of a zircon necklace or utilizing its strength in industrial applications, there’s no denying the awe-inspiring qualities of this remarkable mineral. Zircon truly shines as one of nature’s toughest gems!



Chrysoberyl, a stunningly beautiful mineral, is known for its exceptional hardness. It is one of the hardest minerals found on Earth, ranking 8.5 on the Mohs scale. Its name comes from the Greek words “chrysos” meaning gold and “beryllos” meaning beryl.

Chrysoberyl is most commonly recognized for its mesmerizing yellow-green color, which resembles that of a cat’s eye. This unique optical phenomenon is referred to as chatoyancy and adds an enchanting allure to chrysoberyl gemstones.

In addition to its captivating appearance, chrysoberyl possesses remarkable durability. Its hardness makes it highly resistant to scratching and suitable for everyday wear in jewelry pieces such as rings or pendants.

This precious mineral can be found in various locations around the world including Brazil, Sri Lanka, Russia, and Tanzania. Chrysoberyl deposits are often associated with pegmatites or metamorphic rocks.

Whether admired for its aesthetic beauty or valued for its toughness and longevity, chrysoberyl continues to captivate gem enthusiasts with its exquisite charm.



Garnet is a mineral that boasts incredible hardness and durability, making it one of the hardest minerals found on Earth. Its name derives from the Latin word “granatum,” meaning pomegranate, due to its resemblance to the vibrant red seeds of this fruit.

With a Mohs hardness scale rating of 6.5-7.5, garnet falls just below corundum but still ranks among the toughest minerals known to man. It exists in various colors, including red, orange, yellow, green, brown, and even black.

Known for its striking appearance and versatility, garnet has been used throughout history as both a decorative gemstone and an abrasive material for industrial purposes. In fact, it’s commonly utilized in sandpaper and waterjet cutting machines due to its exceptional toughness.

In addition to being visually appealing and durable, garnet also possesses several metaphysical properties. Many believe that wearing or carrying garnet can enhance energy levels while promoting strength and vitality. It is also thought to stimulate creativity and passion within individuals.

Whether you appreciate garnet for its aesthetic qualities or utilize it for practical purposes like cutting through tough materials with precision – there’s no denying the impressive hardness of this captivating mineral!


Spinel is a fascinating mineral that has captured the attention of gemstone enthusiasts for centuries. Its vibrant hues and excellent durability make it a popular choice for jewelry. But what sets spinel apart from other minerals?

One of the most remarkable features of spinel is its hardness. It ranks 8 on the Mohs scale, making it one of the hardest minerals found on Earth. This hardness can be attributed to its crystal structure, which consists of densely packed atoms.

In terms of color, spinel offers a wide range to choose from. From vivid reds and pinks to mesmerizing blues and violets, there’s a spinel shade to suit every taste. In fact, some famous gemstones like the Black Prince’s Ruby in the British Crown Jewels are actually spinels!

Not only does spinel possess exceptional beauty and toughness, but it also has an intriguing history. For many years, certain red spinels were mistaken for rubies due to their resemblance. It wasn’t until modern scientific advancements that this misconception was corrected.

Whether you’re drawn to its stunning aesthetics or fascinated by its geological significance, there’s no denying that spinel is a captivating mineral deserving admiration and recognition.


Turquoise is a captivating mineral that has been prized for its vibrant blue-green color throughout history. Its unique hue, reminiscent of the clear waters of the Caribbean, makes it a highly sought-after gemstone in jewelry and ornamental pieces.

This beautiful mineral is formed from hydrated copper aluminum phosphate and can be found in arid regions where water interacts with copper deposits over millions of years. The combination of these elements gives turquoise its distinctive color and character.

One fascinating aspect of turquoise is its ability to change color over time. Exposure to light, oils, and even body heat can alter the shade of this gemstone, adding depth and complexity to its appearance.

Not only is turquoise visually stunning, but it also holds cultural significance in many societies. Native American tribes view turquoise as a sacred stone that brings protection and good fortune. It has also been used in ancient Egyptian jewelry, Persian architecture, and Tibetan artifacts.

In addition to being an aesthetic marvel, turquoise is one tough mineral! It ranks between 5-6 on the Mohs scale of hardness, making it relatively durable for everyday wear. However, care should still be taken to avoid exposing it to harsh chemicals or extreme temperatures that could damage its delicate structure.

Whether you admire turquoise for its mesmerizing beauty or appreciate its cultural symbolism, there’s no denying the allure of this remarkable mineral. From ancient civilizations to modern-day fashionistas alike, people continue to be captivated by the ageless charm and enduring strength of turquoise


Malachite is a stunning mineral that captivates with its vibrant green color and unique patterns. Its name derives from the Greek word “malache,” meaning “mallow plant,” due to its resemblance to the plant’s leaves.

This beautiful gemstone is composed of copper carbonate hydroxide, giving it its characteristic green hue. It forms in various environments, often found in association with other copper minerals.

The hardness of malachite ranges between 3.5 and 4 on the Mohs scale, making it relatively soft compared to some of the other minerals on this list. Despite its lower hardness, malachite is still prized for jewelry and decorative purposes due to its striking appearance.

One intriguing aspect of malachite is how it weathers over time. When exposed to air and moisture, it undergoes a chemical reaction known as oxidation, resulting in a change of color from vibrant green to more earthy tones like brown or black.

In addition to being used for ornamental purposes, malachite also has cultural significance. Throughout history, it has been associated with healing properties and believed to promote emotional balance and protection against negative energies.

While not one of the hardest minerals found on Earth, malachite remains highly sought after for its beauty and symbolism within various cultures worldwide!


Chrysocolla is a beautiful mineral that often captivates with its vibrant blue and green hues. It belongs to the copper silicate mineral group and is known for its distinct botryoidal or grape-like formations.

One of the fascinating aspects of chrysocolla is its association with tranquility and calmness. Many believe that this stone has soothing properties, making it a popular choice among those seeking inner peace and emotional healing.

Aside from its aesthetic appeal, chrysocolla also has practical uses. Due to its high copper content, it has been used as an ore for obtaining copper metal throughout history. In addition, it can be polished into stunning jewelry pieces such as pendants or earrings.

However, despite its beauty and practical applications, chrysocolla is quite delicate compared to other minerals on our list of hardest minerals. Its hardness ranges between 2-4 on the Mohs scale, making it susceptible to scratching and damage if not handled with care.

While Chrysocolla may not rank among the hardest minerals found on Earth, there’s no denying its allure and significance in various aspects of human life – from aesthetics to spirituality to industry.


In this article, we have explored some of the hardest minerals found on Earth. These incredible substances not only fascinate us with their durability but also hold immense value in various industries.

From diamonds to chrysocolla, each mineral possesses unique characteristics and properties that make them exceptional. Diamonds remain the hardest known mineral, renowned for their unparalleled strength and irresistible sparkle. Moissanite comes in a close second, offering a similar brilliance at a more affordable price point.

Corundum, topaz, zircon, and chrysoberyl are other minerals known for their hardness and stunning beauty. Whether used as gemstones or abrasives, they play crucial roles in jewelry making and industrial applications alike.

Garnet stands out with its wide range of colors and is often used as an abrasive material due to its hardness. Spinel’s vibrant hues make it a favorite among collectors while turquoise captures hearts with its distinct blue-green shades.

Malachite enthralls with its mesmerizing patterns and has been prized for centuries for both ornamental purposes and as a source of copper ore. Chrysocolla showcases breathtaking blue tones reminiscent of tropical waters.

These twelve minerals exemplify the incredible diversity found within our planet’s geological makeup. They serve as reminders of the Earth’s remarkable ability to create such awe-inspiring treasures over millions of years.

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