how to identify diamond rock

Learning how to identify diamonds is not hard if you have a little knowledge about gemstones. These four characteristics are common to all diamonds: hardness, color, size, and specific gravity. If you’re interested in determining whether a rock you’ve found is a diamond, you’ll want to keep reading! Listed below are the four characteristics you should consider before purchasing a diamond. Once you know what you’re looking for, you’ll be well on your way to purchasing the most beautiful stone in the world.


How to determine hardness of diamond rock? Hardness is the ability of a rock to resist scratching or breaking. This property is determined by how easily a rough surface can be scratched by a sharp point. On the other hand, toughness indicates the resistance to impact, breaking, chipping, or cracking. For example, a diamond can easily be shattered with a hammer, but cannot be scratched with the same hammer. Although hardness and toughness are related physical properties, the difference between them cannot be measured easily. It’s a simple test you can do at home with simple tools and patience.

To determine the hardness of a diamond, first understand the Mohs scale. This is a self-referential scale that categorizes minerals and gemstones based on their hardness. The diamonds in our collection have a Mohs hardness of 10; while some rocks are much harder than others, there are many distinctions between these grades. Luckily, these differences are not large enough to warrant a grade of a diamond.

If you are unsure of a mineral’s hardness, it is easy to test its hardness with a coin or fingernail. You can use a piece of copper wire or a copper coin to scratch the mineral. Copper, talc, and gypsum can’t scratch a diamond, but you can scratch a copper coin to test its hardness. A copper coin is equivalent to a Mohs hardness of 3 while a ruby is harder than diamond.

Mohs’ scale was developed by the famous German geologist Friedrich Mohs in 1812 and is still the most common way to measure hardness. It was based on the idea of a diamond scratching a quartz surface. Mohs’ scale is based on a more general range of minerals than Pliny the Elder had, and thus is very useful for mineral identification. It is also a qualitative ordinal scale.


If you have ever wondered about the color of a diamond rock, then you are not alone. In fact, a large portion of Australian diamond production comes in brown color. Scientists have focused a great deal of their research on the cause of this drab color, and have found several different causes. The most common of these is nickel impurities and lattice defects associated with plastic deformation. While the lattice defects do not impact the durability of a diamond, the presence of the color does impact its appearance.

The color of diamonds is caused by a number of different chemical reactions that take place in its formation. In some cases, nitrogen is substituted for carbon, and this causes the crystal to selectively absorb blue light and transmit yellow light. The transmitted light appears green to the human eye because of this defect. Other types of elements can cause diamonds to develop a green or violet color, depending on their composition. For example, nitrogen may be substituted for carbon in diamonds, which will cause the rock to emit a yellow or green color.

In addition to this, diamonds are also graded based on their color. The diamonds in this color range are most expensive, and they command a premium price. However, 98% of gem-quality diamonds have some amount of yellow. The yellow color is due to impurities in the stone, such as nitrogen. The yellow color is usually a faint tinge, and these diamonds are sometimes called “Cape diamonds” because of their color.

Specific gravity

A diamond is a precious gemstone and its specific gravity is based on its density in relation to water. A diamond’s density is around 3.52, and it can vary considerably depending on its composition and inclusions. In addition to Australian diamonds, the Yellow Diamond of Africa and the Brown Diamond of Brazil have higher specific gravity levels. These differences in specific gravity can be measured using different methods, including hydrostatic balance and weighing. Other methods, which are less accurate, are specific gravity and density of the fragment.

For identifying diamonds, it is important to first understand what constitutes a “diamond.” While it is true that many other types of gems have a high specific gravity value, the differences between them are small enough that the difference between them cannot be determined by sight. This is because the two different minerals have different chemical compositions and the specific gravity of a single specimen can differ from another. A specific gravity table will help gemologists to differentiate between these materials, but it can also add to the confusion.

A typical method of determining the density of a gemstone or rock is to weigh a sample in a liquid that has the same specific gravity. This is a useful technique for smaller stones, such as tumbled quartz pebbles. However, it is not very accurate for diamonds. Using a diamond balance can be difficult if the diamond is less than a half carat. You can also use a heavier liquid like water or a jar of ketchup.

Another method of measuring the specific gravity of a diamond rock is to weigh a diamond – a pure gemstone has the highest SG. However, this method of measuring the density of a diamond ring is not as accurate as a specific gravity measurement of the diamond rock. It can be more difficult to use, and it takes up to 90 seconds to settle. A simple method can be performed with a dustbin filled with water, but it is not easy to perform.


The most common mistake made when comparing the size of diamonds and cubic zirconia is not understanding the specific gravity of a rock. Diamonds have a specific gravity of 3.53 g/mL while cubic zirconia weighs about half that. Fortunately, there are some simple methods for identifying the size of a stone, including weighing it in a drinking glass filled with water. If it floats, it probably isn’t a genuine diamond.

One method is to scratch the rock of a diamond against a piece of glass. This is a myth, but it can be an accurate way to determine the size of a diamond. Diamonds are extremely hard and glass is 5.5 on the Mohs scale. A diamond can scratch glass with a hardness greater than 5, so you can safely use this method to determine its size. Another way to tell whether a rock is a diamond is to use a diamond tester.

Another way to determine the size of a diamond is to use a 20X loop to examine the rock. If you use a 20X loop, you can read the report number and compare it with the specifications of the stone. If it doesn’t, it is most likely a fake, but it is still a way to tell if you’ve got a real diamond. A fake will shatter and you’ll need a high-quality pair of glasses.

If you’re not confident about the size of a stone, you can also conduct a water test. A real diamond will sink in water, while a fake will float. A water tumbler will give you a good idea of how dense a diamond is. A fake stone will have a circular reflection. It’s very difficult to see a letter or dot in a diamond, so use a magnifying glass.


If you’ve ever wondered how to identify inclusions in diamond rocks, you’ve come to the right place. There are many different ways to spot these structures, and they can vary significantly in appearance. One method is using software called OrientXplot. This software calculates the orientation of the crystals in diamonds. Using this software, you can quickly identify any inclusions that you may find in your diamond rock.

Inclusions are small, crystallized deposits of mineral inside the diamond. Their names depend on their shape. Some look like tiny rods under a magnifying glass, while others resemble feathers or small crystals. Whatever their appearance, they can impact the diamond’s clarity rating. A diamond with feathers is a much weaker diamond than one without them. Here are the three most common types of diamond inclusions.

Natural diamond inclusions are the most obvious. These dips appear beneath the polished surface. They’re usually found on the girdle, and are white or slightly opaque. When seen under a 10x magnification, an indentation will appear as a thin line. A cluster of these indented natural diamonds can reduce the overall clarity of a diamond. Small chips, nicks, and other inclusions can be polished out without affecting its appearance, but larger dents and chips can cause a diamond to be re-cut. This may reduce the overall size of the diamond.

Tiny crystals and whitish feathers can also be visible. Feathers are more visible than colored crystals, but the most common type of feather inclusion is a translucent, whitish streak in a diamond’s body. In addition, severe feather inclusions can affect durability, particularly if they are near the girdle. Internal graining is another type of inclusion that may affect the appearance of the diamond. Inclusions may be faint lines or creases, or they could be more prominent and show a reflection.

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